5k Runs in Thornton, Colorado

Showing 1 - 48 of 126 events
NOV17
Registration Perks
Mac 'N Cheese 5k

Welcome to the Denver Mac 'n Cheese premier 5k road race, starting and finishing in Washington Park. The Mac 'N Cheese 5k is a flat and fast course, offering $5,000 in prize money, age group awards, and plenty of food and beverages at the post-race party!

$35
Mac 'N Cheese 5k
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!

$20 - $80
All-Out Annual Dog Days Half Marathon, 10K, 5K & 1Mile
JUL28
Dash for Smiles 5K

Join us at beautiful Stapleton Central Park on for a fun filled morning. Dash for Smiles is a family friendly and dog friendly event so bring the whole family! Be sure to check out the silent auction for some amazing and unique items and packages.

$10 - $30
Dash for Smiles 5K
AUG25
Eye Love Logan 5K
Westminster, CO, United States

Join us in Westminster, CO as we support the fundraising efforts toward finding better treatments and a cure for RDH12 - a retinal degenerative disease. This is a family friendly event and all encouraged to attend! Walkers, joggers, dogs and serious runners: all are welcome!

$25
Eye Love Logan 5K
AUG11
Registration Perks
Donut Dash 5K/10K

The Donut Dash 5K and 10K is Denvers race that ends with donuts. Runners and walkers can take advantage of a flat and fast course, and then enjoy fresh donuts at the finish. Our mission is to bring people together to have a fun, fit morning, all while supporting the many different needs throughout our region.

Coming Soon
Donut Dash 5K/10K
AUG22
Six Pack Summer Series Westminster - 5K & 10K
Westminster, CO, United States

This series is for ROOKIES - looking to learn 'how to run or race'. This is the place to feel welcome and where you can ask any question. Race in either distance offered at each event; you can choose the 5k for every single event, or you can mix and match with the progressive distances.

$25 - $30
Six Pack Summer Series Westminster - 5K & 10K
JUL18
Boulder Stroke & Stride Series
Boulder, CO, United States

The Boulder Stroke & Stride enters its 16th season in 2017, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 9 Thursday evenings throughout the summer. Many participants make their open-water swimming debut in the beginner-friendly Stroke & Stride 750 meter event, while more seasoned athletes get the thrill of starting alongside some of the top athletes in the world in the 1,500 meter swim. 250-400 participants enjoy the Stroke & Stride every week! Live timing, great post race food, Boco Gear visors and pint glasses for 6-pack entries, and series prizes are just the beginning!

$23
Boulder Stroke & Stride Series
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!

$20 - $100
All-Out Fallfest Full Marathon, Half Marathon,10K, 5K & 1Mile
JUL27
Heritage Eagles 5K
Littleton, CO, United States

Come out and support the Heritage Eagles cross country team at the second annual Heritage Eagles 5K. Last year's race, raised over $3,000 for the Heritage Eagles xc team, $10.00 of every registration goes right back to supporting the team and supporting youth runners!

$30 - $99.99
Heritage Eagles 5K
SEP15
Farmers 5000
Wheat Ridge, CO, United States

Since 1981 runners have been coming to Wheat Ridge to run the Farmers 5000! This race continues raise money to support school programs and promotes physical fitness and community spirit. All funds from entry fees are given to various educational and special programs within the school. The 5K run and walk, along with a 1K fun run, are open to all!

$10 - $35
Farmers 5000
SEP14
The Denver 5K

THE Denver 5k! Denver's iconic Sloan Lake is the setting for the Denver 5k, presented by Belong Designs. Celebrate with friends and family as you race around the lake under the shadow of Denver's skyline. The Denver 5k is the perfect 'cool down' to the racing season! Make it an outing as you dine at the expo's Food Trucks and join fellow runners at our local brewpub after-party featuring a free beer for each racer, this year at Joyride Brewing!

$35
The Denver 5K
OCT6
Costumed K9 Canter 1 Mile Fun Run and 5k
Westminster, CO, United States

Love to run in Colorado? Love dogs? Love costumes, the outdoors, and contests? The K9 Canter 5k & 1 Mile Fun Run on the outskirts of Denver is the ultimate dog friendly event jam packed with all your favorite things! With this event just before Halloween, it's perfect for testing out the new Halloween Costumes! Your puppy is going to walk away proud with their very own Souvenir Bandana swag!

This event is a favorite with OR without a furry friend.

$15 - $35
Costumed K9 Canter 1 Mile Fun Run and 5k
SEP14
Gummball 5k
Brighton, CO, United States

The Adams County Sheriffs Office and the Adams County Sheriffs Foundation are proud to announce the Annual Gummball 5K Run and Walk. The Gummball 5k will be run in honor of our fallen brother, Deputy Heath Gumm

$10 - $30
Gummball 5k
OCT6
Hot Chocolate Denver 15/5k

Join the movement that's taken over the racing world. Allstate Hot Chocolate 15k/5k is headed to Denver! Start and finish at Civic Center Park amongst Denver's biggest chocolate aficionados. This year, train, race, and celebrate with us all the way to the finish line. We're with you through the season.

$45
Hot Chocolate Denver 15/5k
OCT5
The Grace Race 5k

Help eRace World Hunger at Rainbow Trail Lutheran Camps Annual Grace Race. The event is held in collaboration with the Rocky Mountain Synod Hunger Network. Over the last 12 years, RTLC and the participants of Grace have contributed over $61,000 to the ELCA World Hunger Appeal. We are aiming for 300 participants for this years race. This can be the year we top $10,000 for the check that we send to the ELCA World Hunger Appeal!

$30
The Grace Race 5k
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!

$35 - $70
Westy Half & 5k
OCT26
Monster Dash Run Denver

Come enjoy a little exercise and burn off those Halloween calories. There will be 2 distance choices: the 5k "Fun Run" is for the entire family to run together (Ages 5 and up) and strollers allowed. The 10k Race is for the runner looking for more of a challenge.

$10 - $30
Monster Dash Run Denver
OCT6
Grizzly Growl 5K
Golden, CO, United States

Join us to run, walk, or cheer! Invite your family, friends, and neighbours to join the fun at our Grizzly Growl 5K run and 1K Fun Run. This family-friendly race will raise money for the Maple Grove PTA; ensuring our students, faculty and school have the tools they need to help our kids succeed. Our mission is to encourage physical fitness, sportsmanship and foster a personal commitment to community...with lots of fun mixed in!

$10 - $80
Grizzly Growl 5K
NOV3
Fall Fest 5k Walk/Run (BolderBoulder qualifying event)

Goddard Cares Fall Fest 5K is a BolderBoulder qualifying race/walk in honor of Luke Wyatt Morin. Luke attended The Goddard School for 5 years and was months away from kindergarten last year when he was stolen from this world by DIPG (Diffuse Intrinsic Pontine Glioma), an aggressive and fatal pediatric brain tumor.

There is still no effective treatment for DIPG and no chance of survival. All proceeds from this race will go to the DIPG research team at Childrens Hospital Colorado where this dedicated group are advancing treatments and cures for DIPG and need funding. With proper resources, their ground breaking work will bring hope into the lives of children and families affected by DIPG for the first time in history.

Thank you for your support!

$30
Fall Fest 5k Walk/Run (BolderBoulder qualifying event)
SEP29
Justice Run
Littleton, CO, United States

The Justice Run family-friendly event to raise money and awareness for human trafficking and its victims. We have something for everyone-10K Run, 5K Run or Walk, and a 1K Kids Run-all at the beautiful Hudson Gardens.

$10 - $35
Justice Run
DEC7
All-Out Fa La La Half Marathon, 10K, 5K & 1Mile
Westminster, CO, United States

Deck your halls again this season with some sweet race SWAG at our 8th annual Fa La La centrally located between Denver & Boulder just a mile off US-36 at Westminsters award-winning City Park! Along with its Endless Series sidekick in July Dog Days, the majesty of our breathtaking Flatirons as a backdrop will inspire you every step of these 1M, 5K, 10K & Half Marathon courses along Big Dry Creek Trail well known as a Colorado favorite.

$20 - $80
All-Out Fa La La Half Marathon, 10K, 5K & 1Mile
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