Half Marathons in Colorado

Showing 1 - 48 of 101 events
JUN2
REVEL Rockies Marathon & Half Marathon

This incredibly fast and remarkably beautiful downhill road race takes runners from the forests and canyons of the Rocky Mountains to the foothills of Denver, Colorado.

Details

REVEL Rockies Marathon & Half Marathon

1342 Sherman St, Denver, CO 80203, USAView event
About the event
From the organiser

This incredibly fast and remarkably beautiful downhill road race takes runners from the forests and canyons of the Rocky Mountains to the foothills of Denver, Colorado.

$99.99
REVEL Rockies Marathon & Half Marathon
JUN2
Colorado 13er Half Marathon/10k/5k
Louisville, CO, United States

The Colorado 13er is THE event where the best parts of trail running road racing meld to create a truly enjoyable, kind to your body, well supported 13.1 race! Seasoned runners and first timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.

Details

Colorado 13er Half Marathon/10k/5k

740 Main St, Louisville, CO 80027, USAView event
About the event
From the organiser

The Colorado 13er is THE event where the best parts of trail running road racing meld to create a truly enjoyable, kind to your body, well supported 13.1 race! Seasoned runners and first timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.

$35 - $65
Colorado 13er Half Marathon/10k/5k
JUN2
Colorado 13er
Louisville, CO, United States

The Colorado 13er is THE event where the best parts of trail running road racing meld to create a truly enjoyable, kind to your body, well supported 13.1 race! Seasoned runners and first timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.

Details

Colorado 13er

740 Main St, Louisville, CO 80027, USAView event
About the event
From the organiser

The Colorado 13er is THE event where the best parts of trail running road racing meld to create a truly enjoyable, kind to your body, well supported 13.1 race! Seasoned runners and first timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.

$35 - $45
Colorado 13er
JUN16
Estes Park Marathon
Estes Park, CO, United States

The Estes Park Marathon is one of Americas most scenic marathon courses! Runners enjoy our new road course that is surrounded by glorious 360 degree views of Rocky Mountain National Park. Starting with an inspiring 1500 ft descent, within the first 6.5 miles, runners will find their rhythm and strong pace for an exceptional marathon race. As with all great journeys, the mountainous beauty will encourage you to overcome the physical and psychological challenges of the climbs and feel the thrill of several scenic downhills. Share the celebration and joy of running with us! Runners World magazine recommends this destination race, for a reason!

This event is a part of the Colorado Mountain Half Series.

Details

Estes Park Marathon

1600 Manford Ave, Estes Park, CO 80517, USAView event
About the event
From the organiser

The Estes Park Marathon is one of Americas most scenic marathon courses! Runners enjoy our new road course that is surrounded by glorious 360 degree views of Rocky Mountain National Park. Starting with an inspiring 1500 ft descent, within the first 6.5 miles, runners will find their rhythm and strong pace for an exceptional marathon race. As with all great journeys, the mountainous beauty will encourage you to overcome the physical and psychological challenges of the climbs and feel the thrill of several scenic downhills. Share the celebration and joy of running with us! Runners World magazine recommends this destination race, for a reason!

This event is a part of the Colorado Mountain Half Series.

$10 - $45
Estes Park Marathon
JUN16
Father's Day 5K/10K

Join us for a family running extravaganza! With events from 1 Mile to Half Marathon distances, as well as the ability to Double (run a 1 Mile or 5K at 7am and add a 10K, 10 Mile or Half Marathon at 8am), there is an event distance for anyone or everyone in the family at this event!

Details

Father's Day 5K/10K

Denver, CO, USAView event
About the event
From the organiser

Join us for a family running extravaganza! With events from 1 Mile to Half Marathon distances, as well as the ability to Double (run a 1 Mile or 5K at 7am and add a 10K, 10 Mile or Half Marathon at 8am), there is an event distance for anyone or everyone in the family at this event!

$35 - $45
Father's Day 5K/10K
JUN22
Mountain Ridge Trail Half Marathon and 10K
Highlands Ranch, CO, United States

This annual trail race, has quickly become a runner favorite among Endurance Race Series front range events. The rolling hills of this Highlands Ranch course will keep the Heart Rate pumping while offering some of the best views in the front range.

Details

Mountain Ridge Trail Half Marathon and 10K

Highlands Ranch, CO, USAView event
About the event
From the organiser

This annual trail race, has quickly become a runner favorite among Endurance Race Series front range events. The rolling hills of this Highlands Ranch course will keep the Heart Rate pumping while offering some of the best views in the front range.

$50
Mountain Ridge Trail Half Marathon and 10K
JUN22
Registration Perks
All-Out Summer Breeze Half Marathon, 10K, 5K & 1Mile
Arvada, CO, United States

From the heart of the West Metro area and the Stenger Soccer Complex, All-Out brings you our 7th annual Summer Breeze! Along with its Endless Series sidekick in January Polar Prowl, these 1M, 5K, 10K and Half Marathon courses will follow Van Bibber Creek Trail west through Arvadas open spaces with spectacular views of the countryside and Table Mountain. Plus, all distances have a fairly level grade, so yup get ready for a PR!

Details

All-Out Summer Breeze Half Marathon, 10K, 5K & 1Mile

11200 W 58th Ave, Arvada, CO 80002, USAView event
About the event
From the organiser

From the heart of the West Metro area and the Stenger Soccer Complex, All-Out brings you our 7th annual Summer Breeze! Along with its Endless Series sidekick in January Polar Prowl, these 1M, 5K, 10K and Half Marathon courses will follow Van Bibber Creek Trail west through Arvadas open spaces with spectacular views of the countryside and Table Mountain. Plus, all distances have a fairly level grade, so yup get ready for a PR!

$25 - $65
All-Out Summer Breeze Half Marathon, 10K, 5K & 1Mile
JUN22
Slacker Half Marathon
Georgetown, CO, United States

Come join us for the highest DOWNHILL half marathon in the country and possibly the highest DOWNHILL 4 Mile Run!

Do not be misled by the name but this is the Slacker Half Marathon/4M Race! It is the highest downhill half marathon in the countrybeginning at 10,630 feet and traveling over a rolling hill descent to 8400 feet! The half marathon begins at Loveland Ski Area--BASIN and travels the first mile on dirt roads before joining a non-motorized paved bike path for five miles through a Forest Service area of wetlands and natural waterfalls on a trail built to sustain the weight of an ambulance!

Details

Slacker Half Marathon

Georgetown, CO 80444, USAView event
About the event
From the organiser

Come join us for the highest DOWNHILL half marathon in the country and possibly the highest DOWNHILL 4 Mile Run!

Do not be misled by the name but this is the Slacker Half Marathon/4M Race! It is the highest downhill half marathon in the countrybeginning at 10,630 feet and traveling over a rolling hill descent to 8400 feet! The half marathon begins at Loveland Ski Area--BASIN and travels the first mile on dirt roads before joining a non-motorized paved bike path for five miles through a Forest Service area of wetlands and natural waterfalls on a trail built to sustain the weight of an ambulance!

$20 - $60
Slacker Half Marathon
JUL4
Longmont Half & 5k (LM Half)
Longmont, CO, United States

Celebrate Independence Day with us, and join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!

Details

Longmont Half & 5k (LM Half)

211 Fairview St, Longmont, CO 80504, USAView event
About the event
From the organiser

Celebrate Independence Day with us, and join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!

$35
Longmont Half & 5k (LM Half)
JUL14
Summer Roundup Half Marathon

Half Marathon and 10K July 14th, at Cheyenne Mountain State Park Colorado Springss best kept running secret for over 18 years. A challenge for all ability levels.

Details

Summer Roundup Half Marathon

Cheyenne Mountain State Park, 410 JL Ranch Heights Rd, Colorado Springs, CO 80926, USAView event
About the event
From the organiser

Half Marathon and 10K July 14th, at Cheyenne Mountain State Park Colorado Springss best kept running secret for over 18 years. A challenge for all ability levels.

$35 - $45
Summer Roundup Half Marathon
JUL14
Registration Perks
Spartan Trail Fort Carson - Colorado Springs

Spartan Trail is a no-obstacles foot race through rugged wilderness, overseen by legendary race directors from the world of trail running. With a 10k (6.2 mile) race at all events and a Half Marathon (13.1 mile) at select locations, theres a Spartan Trail for everyone.

Details

Spartan Trail Fort Carson - Colorado Springs

Colorado Springs, CO, USAView event
About the event
From the organiser

Spartan Trail is a no-obstacles foot race through rugged wilderness, overseen by legendary race directors from the world of trail running. With a 10k (6.2 mile) race at all events and a Half Marathon (13.1 mile) at select locations, theres a Spartan Trail for everyone.

$65 - $95
Spartan Trail Fort Carson - Colorado Springs
JUL20
Kickers For Kids Fun Run
Palmer Lake, CO, United States

"Wake Up And Smell The Pine Trees" at the Kickers For Kids Fun Run located at the Palmer Lake Regional Recreation Area in Palmer Lake, Colorado. The Kickers For Kids Fun Run is an event for all levels of runners and a great opportunity to just get out, exercise, and enjoy all of the beauty of the New Santa Fe Regional Trail under a nice warm Colorado summer sun.

Details

Kickers For Kids Fun Run

Palmer Lake, CO, USAView event
About the event
From the organiser

"Wake Up And Smell The Pine Trees" at the Kickers For Kids Fun Run located at the Palmer Lake Regional Recreation Area in Palmer Lake, Colorado. The Kickers For Kids Fun Run is an event for all levels of runners and a great opportunity to just get out, exercise, and enjoy all of the beauty of the New Santa Fe Regional Trail under a nice warm Colorado summer sun.

$35 - $100
Kickers For Kids Fun Run
JUL20
All-Out Annual Dog Days Half Marathon, 10K, 5K & 1Mile
Westminster, CO, United States

Get ready for some fun in the sun and a great mid-season test of your training as we bring our 7th Annual Dog Days 1M, 5K, 10K & Half Marathon! Centrally located between Denver & Boulder at Westminsters award-winning City Park, along with its Endless Series sidekick in December Fa La La, the beauty of our breathtaking Flatirons as a backdrop will inspire you every step of the way. Plus Big Dry Creek Trail is well known as a Colorado favourite!

Details

All-Out Annual Dog Days Half Marathon, 10K, 5K & 1Mile

10455 Sheridan Boulevard, Westminster, CO 80020, USAView event
About the event
From the organiser

Get ready for some fun in the sun and a great mid-season test of your training as we bring our 7th Annual Dog Days 1M, 5K, 10K & Half Marathon! Centrally located between Denver & Boulder at Westminsters award-winning City Park, along with its Endless Series sidekick in December Fa La La, the beauty of our breathtaking Flatirons as a backdrop will inspire you every step of the way. Plus Big Dry Creek Trail is well known as a Colorado favourite!

$20 - $80
All-Out Annual Dog Days Half Marathon, 10K, 5K & 1Mile
JUL21
Black Hawk Trail Half Marathon
Gilpin County, CO, United States

If you are looking for one of the best "hill" courses the ERS has to offer, than look no further! You can bet this course will keep your HR high, while you take in the surrounding mountain views and terrain.

Details

Black Hawk Trail Half Marathon

Crawford Gulch Rd, Colorado 80403, USAView event
About the event
From the organiser

If you are looking for one of the best "hill" courses the ERS has to offer, than look no further! You can bet this course will keep your HR high, while you take in the surrounding mountain views and terrain.

$50
Black Hawk Trail Half Marathon
AUG10
Georgetown to Idaho Springs Half
Georgetown, CO, United States

The GTIS Half is a Colorado Runner's "Must-Do!" Enjoy breathtaking views along Clear Creek as you traverse a scenic and gently rolling mountain course that winds down the Clear Creek Valley. Start in Georgetown where the elevation is at 8,500 feet, and gradually run along the frontage road that runs parallel to, but well away from I-70. Arrive in Idaho Springs at an elevation of 7,500 feet at the finish. Enjoy a post-race celebration at Clear Creek football field in Idaho Springs with vendor booths, refreshments, finisher medals, award ceremony, oh and gorgeous Colorado mountain scenery. This is Colorado at its best!

Part of the Colorado Mountain Half Series!

Details

Georgetown to Idaho Springs Half

Georgetown, CO 80444, USAView event
About the event
From the organiser

The GTIS Half is a Colorado Runner's "Must-Do!" Enjoy breathtaking views along Clear Creek as you traverse a scenic and gently rolling mountain course that winds down the Clear Creek Valley. Start in Georgetown where the elevation is at 8,500 feet, and gradually run along the frontage road that runs parallel to, but well away from I-70. Arrive in Idaho Springs at an elevation of 7,500 feet at the finish. Enjoy a post-race celebration at Clear Creek football field in Idaho Springs with vendor booths, refreshments, finisher medals, award ceremony, oh and gorgeous Colorado mountain scenery. This is Colorado at its best!

Part of the Colorado Mountain Half Series!

$85
Georgetown to Idaho Springs Half
AUG25
Endurance House Erie Half & 5K

The race is located on Coal Creek Trail. The majority of both courses is on concrete, while a portion of the Half is on gravel trail. Stay after racing for the After-Party at Echo Brewing!

Details

Endurance House Erie Half & 5K

The Boneyard at Reliance Park, 900 County Rd 1 1/2, Erie, CO 80516, USAView event
About the event
From the organiser

The race is located on Coal Creek Trail. The majority of both courses is on concrete, while a portion of the Half is on gravel trail. Stay after racing for the After-Party at Echo Brewing!

$35 - $60
Endurance House Erie Half & 5K
AUG25
Roger's Grove Trail Half Marathon & 10K
Longmont, CO, United States

Welcome to the Roger's Grove Trail Half Marathon and 10K in Longmont CO. If you want a perfect view of the mountains, a flat and fast course, and a stint around the water... Well then look no further than our Annual trail race at Roger's Grove Park in Longmont. Settled into the heart of Longmont, the Roger's Grove Trail Half Marathon and 10K is a perfect course for all levels of trail runner...

Details

Roger's Grove Trail Half Marathon & 10K

220 S Hover St, Longmont, CO 80501, USAView event
About the event
From the organiser

Welcome to the Roger's Grove Trail Half Marathon and 10K in Longmont CO. If you want a perfect view of the mountains, a flat and fast course, and a stint around the water... Well then look no further than our Annual trail race at Roger's Grove Park in Longmont. Settled into the heart of Longmont, the Roger's Grove Trail Half Marathon and 10K is a perfect course for all levels of trail runner...

$50 - $80
Roger's Grove Trail Half Marathon & 10K
SEP6
American Heroes Run
Longmont, CO, United States

The American Heroes run started in 2010 by David Clark as a way of commemorating the tragic events of 9/11. The race started as a very small group of friends running for 9 hours and 11 minutes and has grown into a special run shared by thousands of runners from all over the world.

Details

American Heroes Run

City of Longmont Rogers Grove Park, 220 Hover Rd, Longmont, CO 80501, USAView event
About the event
From the organiser

The American Heroes run started in 2010 by David Clark as a way of commemorating the tragic events of 9/11. The race started as a very small group of friends running for 9 hours and 11 minutes and has grown into a special run shared by thousands of runners from all over the world.

$30 - $250
American Heroes Run
SEP7
Boyd Lake Bash Multisport Festival
Loveland, CO, United States

The Boyd Lake Bash Multisport Festival will be an event youll look forward to all season long. Why? Beautiful mountain views, ideal weather and a choice of multiple events!

Details

Boyd Lake Bash Multisport Festival

Loveland, CO, USAView event
About the event
From the organiser

The Boyd Lake Bash Multisport Festival will be an event youll look forward to all season long. Why? Beautiful mountain views, ideal weather and a choice of multiple events!

$30
Boyd Lake Bash Multisport Festival
SEP7
Palmer Lake Half Marathon and 10K
Monument, CO, United States

The Palmer Lake Trail Half Marathon and 10K means wide opens spaces and downhill finishes!! Join us in Monument CO for the Annual trail race along the Santa Fe Trail and Greenland Open Space.

Details

Palmer Lake Half Marathon and 10K

238 3rd St, Monument, CO 80132, USAView event
About the event
From the organiser

The Palmer Lake Trail Half Marathon and 10K means wide opens spaces and downhill finishes!! Join us in Monument CO for the Annual trail race along the Santa Fe Trail and Greenland Open Space.

$45
Palmer Lake Half Marathon and 10K
SEP7
Ned Ned Run
Nederland, CO, United States

Embark on your journey by winding through Old Town Nederland, the epitome of Colorado mountain towns. The 1/2 Marathon will take you on dirt roads and single track trails as you challenge yourself to be a little more extreme`` and immerse yourself in the history and beauty of the area. This long-time race is family friendly and you are welcome to run with your dog on leash in the 5K / 10K. Costumes are encouraged!

Part of the Colorado Mountain Half Series

Details

Ned Ned Run

151 East St, Nederland, CO 80466, USAView event
About the event
From the organiser

Embark on your journey by winding through Old Town Nederland, the epitome of Colorado mountain towns. The 1/2 Marathon will take you on dirt roads and single track trails as you challenge yourself to be a little more extreme`` and immerse yourself in the history and beauty of the area. This long-time race is family friendly and you are welcome to run with your dog on leash in the 5K / 10K. Costumes are encouraged!

Part of the Colorado Mountain Half Series

$40 - $70
Ned Ned Run
SEP15
Women's Run Series - Denver
Arvada, CO, United States

Come join StartLine Racing for their Inaugural Women's Run Series presented by First Watch. This event will feature a Half Marathon, 10K, 5K and Butterfly Dash at North Area Athletic Complex.

Details

Women's Run Series - Denver

Arvada, CO, USAView event
About the event
From the organiser

Come join StartLine Racing for their Inaugural Women's Run Series presented by First Watch. This event will feature a Half Marathon, 10K, 5K and Butterfly Dash at North Area Athletic Complex.

$35
Women's Run Series - Denver
SEP21
All-Out Fallfest Full Marathon, Half Marathon,10K, 5K & 1Mile
Westminster, CO, United States

One of Colorados favourite trails meets one of its most glorious parks at our 5th annual Fallfest 1M, 5K, 10K, Half & Full Marathon! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view, then the rustic nature to the northeast will be waiting to greet our marathon athletes. A course thats not too hilly & not too flat makes this the perfect choice for all abilities & preferences, plus along with its Endless Series sidekick in April Beat the Heat, All-Out Multicourse is proud to bring you the one and only groomed trail marathon course in the Denver Metro Area!

Details

All-Out Fallfest Full Marathon, Half Marathon,10K, 5K & 1Mile

10170 Church Ranch Way, Westminster, CO 80021, USAView event
About the event
From the organiser

One of Colorados favourite trails meets one of its most glorious parks at our 5th annual Fallfest 1M, 5K, 10K, Half & Full Marathon! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view, then the rustic nature to the northeast will be waiting to greet our marathon athletes. A course thats not too hilly & not too flat makes this the perfect choice for all abilities & preferences, plus along with its Endless Series sidekick in April Beat the Heat, All-Out Multicourse is proud to bring you the one and only groomed trail marathon course in the Denver Metro Area!

$20 - $100
All-Out Fallfest Full Marathon, Half Marathon,10K, 5K & 1Mile
SEP22
Xterra Trail Run Cheyenne Mountain State Park

The annual XTERRA Half Marathon, 12K and 5K trail run will take place at the Cheyenne Mountain State Park in Colorado Springs. The trail run that has become a must do race in the series. Taking runners up trails, over mountains, through forests and over streams in and around Cheyenne Mountain State Park.

Details

Xterra Trail Run Cheyenne Mountain State Park

Colorado Springs, CO, USAView event
About the event
From the organiser

The annual XTERRA Half Marathon, 12K and 5K trail run will take place at the Cheyenne Mountain State Park in Colorado Springs. The trail run that has become a must do race in the series. Taking runners up trails, over mountains, through forests and over streams in and around Cheyenne Mountain State Park.

$40
Xterra Trail Run Cheyenne Mountain State Park
SEP28
Bear Chase Race - 100K/50M/50K

The Bear Chase Race Endurance Festival is a 100k, 50 mile, 50k, Half Marathon and the Baby Bear 10k Trail Race at beautiful Bear Creek Lake Park, in Lakewood, CO.

An excellent race for first time ultramarathoners, runners will experience a variety of challenging terrain and sweeping panoramic views throughout the race. The course is pretty fast (by trail / ultra standards), and not overly technical.

Details

Bear Chase Race - 100K/50M/50K

AKEWOOD URGENT CARE, 670 S Wadsworth Blvd, Lakewood, CO 80226, USAView event
About the event
From the organiser

The Bear Chase Race Endurance Festival is a 100k, 50 mile, 50k, Half Marathon and the Baby Bear 10k Trail Race at beautiful Bear Creek Lake Park, in Lakewood, CO.

An excellent race for first time ultramarathoners, runners will experience a variety of challenging terrain and sweeping panoramic views throughout the race. The course is pretty fast (by trail / ultra standards), and not overly technical.

$45 - $130
Bear Chase Race - 100K/50M/50K
SEP28
Boulder Backroads Half Marathon
Boulder, CO, United States

We have revived the spirit of the original race. The double-loop course is spectator-friendly and not quite as hilly as the original. The festive mood and runner-centered approach remain. The race expo will include some of your favorite local and national brands; the post-race party, headlined by Avery Brewing Company, and including food from Niwot Market, Savory Cuisines and more, will allow runners to refuel and relax with friends, family and fellow-athletes. Local companies Skratch Labs and V-Fuel provide on-course nutrition.

Details

Boulder Backroads Half Marathon

1515 19th St, Boulder, CO 80302, USAView event
About the event
From the organiser

We have revived the spirit of the original race. The double-loop course is spectator-friendly and not quite as hilly as the original. The festive mood and runner-centered approach remain. The race expo will include some of your favorite local and national brands; the post-race party, headlined by Avery Brewing Company, and including food from Niwot Market, Savory Cuisines and more, will allow runners to refuel and relax with friends, family and fellow-athletes. Local companies Skratch Labs and V-Fuel provide on-course nutrition.

$35
Boulder Backroads Half Marathon
SEP28
Colorado Springs Marathon

The Colorado Springs Marathon presented by Centura Orthopedics, is a community running event that features a full marathon, half marathon, and 5k, beginning & ending at Acacia Park in downtown Colorado Springs. The course will showcase the city of Colorado Springs by taking runners on Wood Ave, Cascade Ave, Platte Ave, through America the Beautiful Park, Monument Valley Park, around Memorial Park, by the Olympic Training Center & through downtown. This family friendly race is a premiere endurance running event, attracting people from 38 different states.

Details

Colorado Springs Marathon

Acacia Park, 115 E Platte Ave, Colorado Springs, CO 80903, USAView event
About the event
From the organiser

The Colorado Springs Marathon presented by Centura Orthopedics, is a community running event that features a full marathon, half marathon, and 5k, beginning & ending at Acacia Park in downtown Colorado Springs. The course will showcase the city of Colorado Springs by taking runners on Wood Ave, Cascade Ave, Platte Ave, through America the Beautiful Park, Monument Valley Park, around Memorial Park, by the Olympic Training Center & through downtown. This family friendly race is a premiere endurance running event, attracting people from 38 different states.

$8 - $30
Colorado Springs Marathon
SEP28
Prairie Dog Half Marathon, 10K & 5K – Westminster
Westminster, CO, United States

The Westminster event supports Growing Home of Westminster. Bring 5 items for donation on race day and you'll be entered into a raffle for great prizes!

Details

Prairie Dog Half Marathon, 10K & 5K – Westminster

Westminster, CO 80020, USAView event
About the event
From the organiser

The Westminster event supports Growing Home of Westminster. Bring 5 items for donation on race day and you'll be entered into a raffle for great prizes!

Free - $75
Prairie Dog Half Marathon, 10K & 5K – Westminster
OCT2
American Discovery Trail Half Marathon

The Pikes Peak Road Runners American Discovery Trail Marathon supports PPRR and the Trails and Open Space Coalition. The scenic course along paved and dirt trails is about as fast and flat as you can find in Colorado.

Details

American Discovery Trail Half Marathon

126 Cimino Dr, Colorado Springs, CO 80903, USAView event
About the event
From the organiser

The Pikes Peak Road Runners American Discovery Trail Marathon supports PPRR and the Trails and Open Space Coalition. The scenic course along paved and dirt trails is about as fast and flat as you can find in Colorado.

$30 - $55
American Discovery Trail Half Marathon
OCT12
The Cheyenne Mountain Run

This event features two trail runs, one for the more advance trail runner and a 3 mile run for all to enjoy.

Details

The Cheyenne Mountain Run

Cheyenne Mountain State Park, 410 JL Ranch Heights Rd, Colorado Springs, CO 80926, USAView event
About the event
From the organiser

This event features two trail runs, one for the more advance trail runner and a 3 mile run for all to enjoy.

$25 - $50
The Cheyenne Mountain Run
OCT19
Rock ‘n’ Roll Denver

Take in some deep breaths as you'll be 1 mile above sea level for this running and music festival. Live music and supporters line the course, so this is one not to be missed for runners that love a party atmosphere. Be sure to collect your Rock ‘n’ Roll medal and enjoy the post-race parties.

Details

Rock ‘n’ Roll Denver

1280 Bannock St, Denver, CO 80204, USAView event
About the event
Take in some deep breaths as you'll be 1 mile above sea level for this running and music festival. Live music and supporters line the course, so this is one not to be missed for runners that love a party atmosphere. Be sure to collect your Rock ‘n’ Roll medal and enjoy the post-race parties.
$59.99 - $109.99
Rock ‘n’ Roll Denver
OCT27
Registration Perks
All-Out Kooky-Spooky 1M, 5K, 10K, & Half Marathon
Golden, CO, United States

From the base of Table Mountain and Colorados spectacular foothills, All-Out Multicourse presents our 8th annual Kooky-Spooky from Jefferson Countys NAAC Stadium easily accessible from Hwy 93, 6th Ave, Hwy 58 or I-70. Along with its Endless Series sidekick in March Spring Fever, this 1M, 5K, 10K & Half Marathon courses will hug the shores of Arvadas Blunn Reservoir via the Ralston Creek Trail and will challenge the beginner and veteran athlete alike.

Details

All-Out Kooky-Spooky 1M, 5K, 10K, & Half Marathon

1117 Washington Ave, Golden, CO 80401, USAView event
About the event
From the organiser

From the base of Table Mountain and Colorados spectacular foothills, All-Out Multicourse presents our 8th annual Kooky-Spooky from Jefferson Countys NAAC Stadium easily accessible from Hwy 93, 6th Ave, Hwy 58 or I-70. Along with its Endless Series sidekick in March Spring Fever, this 1M, 5K, 10K & Half Marathon courses will hug the shores of Arvadas Blunn Reservoir via the Ralston Creek Trail and will challenge the beginner and veteran athlete alike.

$20 - $80
All-Out Kooky-Spooky 1M, 5K, 10K, & Half Marathon
OCT27
Westy Half & 5k
Westminster, CO, United States

Join us for the Westy Half in October! This race is chip timed.

This year's event features an out and back course from Westminster Promenade Terrace to Standley Lake and back. Celebrate autumn with us, and join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!

Details

Westy Half & 5k

Westminster, CO 80020, USAView event
About the event
From the organiser

Join us for the Westy Half in October! This race is chip timed.

This year's event features an out and back course from Westminster Promenade Terrace to Standley Lake and back. Celebrate autumn with us, and join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!

$35 - $70
Westy Half & 5k
NOV2
BackCountry Wilderness Half Marathon
Lone Tree, CO, United States

The Annual Backcountry Wilderness Half Marathon in Highlands Ranch! This 13.1 mile scenic trail run utilizes the Douglas County East/West trail and the beautiful Highlands Ranch Community Association's Backcountry Wilderness Area trails.

Details

BackCountry Wilderness Half Marathon

11033 Monarch Blvd, Lone Tree, CO 80124, USAView event
About the event
From the organiser

The Annual Backcountry Wilderness Half Marathon in Highlands Ranch! This 13.1 mile scenic trail run utilizes the Douglas County East/West trail and the beautiful Highlands Ranch Community Association's Backcountry Wilderness Area trails.

$65
BackCountry Wilderness Half Marathon
FEB22
Snowman Stampede
Strasburg, CO, United States

The Snowman Stampede is a flat and fast 5k, 10K and half Marathon held ever February in Littleton, Colorado. Come to Hudson Gardens and run the race that everyone is talking about.

Details

Snowman Stampede

56003 E Prentice Pl, Strasburg, CO 80136, USAView event
About the event
From the organiser

The Snowman Stampede is a flat and fast 5k, 10K and half Marathon held ever February in Littleton, Colorado. Come to Hudson Gardens and run the race that everyone is talking about.

$23
Snowman Stampede
FEB22
Registration Perks
All-Out Mardi Crawl Half Marathon, 10K, 5K & 1 Mile

Whew, finally an option to race in February that doesnt include hearts, flowers or anything pink! Get your nature fix at Bear Creek Lake Park and our annual Mardi Crawl 1M, 5K, 10K & Half Marathon! Just outside beautiful Morrison, CO The Nearest Faraway Place, and at the base of the world famous Red Rocks Amphitheatre, the majestic views every step of the way along these loop courses are a Colorado cant miss!

Details

All-Out Mardi Crawl Half Marathon, 10K, 5K & 1 Mile

15642 CO-8, Lakewood, CO 80228, USAView event
About the event
From the organiser

Whew, finally an option to race in February that doesnt include hearts, flowers or anything pink! Get your nature fix at Bear Creek Lake Park and our annual Mardi Crawl 1M, 5K, 10K & Half Marathon! Just outside beautiful Morrison, CO The Nearest Faraway Place, and at the base of the world famous Red Rocks Amphitheatre, the majestic views every step of the way along these loop courses are a Colorado cant miss!

$20 - $60
All-Out Mardi Crawl Half Marathon, 10K, 5K & 1 Mile

What you need to know about Half Marathons

At 13.1 miles, a half marathon is long enough to test even the strongest runners, but short enough for almost anyone determined to conquer their next challenge. We have a jam-packed calendar of half marathons taking place up and down the country — from big ballot events to local community races and spectacular trail runs. Get involved and conquer your next challenge.

Find local Half Marathon running races

A half marathon is a fantastic event for those new to running to really push themselves, or as a great warm up event for those ready to tackle a full marathon or even an ultramarathon

What is the distance covered in half marathon?
The half marathon is one of running`s most popular distance - a half marathon is 13.1 miles (or 21.1km).
What is an average time for a half marathon?
Breaking 2:00 (9:09 per mile pace) is a common goal, and that time is considered a respectable half marathon time among runners. The average times for half marathons in the U.S. in 2015 were 2:04:00 for males and 2:22:21 for females.
What is the half marathon world record?
The world record for men is 58:23 for men and 1:04:52 for women.
How long does it take to train for a half marathon?
If you are working with a training plan you can achieve a half marathon in 8 weeks.

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