Events in Colorado

Boulderthon 2025: The Boulder Marathon

Runnin' of the Green

Ragnar Trail Colorado

Run for Coffee 5K/10K/13.1 DENVER/AURORA

The Cookie Dash Run 5K/10K/13.1 DENVER/AURORA

Lunar New Year Fortune Run 5K/10K/13.1 DENVER/AURORA

Together Against Breast Cancer 5K/10K/13.1 DENVER/AURORA

Singles & Friends Running Club DENVER/AURORA

Valentines Live, Love, RUN 5K/10K/13.1 DENVER/AURORA

The Sloth Run 5K/10K/13.1 DENVER/AURORA

Muffin Marathon 5K/10K/13.1 DENVER/AURORA

St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORA

Arbor Day Run Green 5K/10K/13.1 DENVER/AURORA

Fox Trot Race 5K/10K/13.1 DENVER/AURORA

Run DENVER/AURORA "The Mile High City" 5K/10K/13.1 Race

Earth Day: Run GREEN 5K/10K/13.1 DENVER/AURORA

Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA

Sloth Runners Race 5K/10K/13.1 DENVER/AURORA

Cinco De Mayo Run: Against All Odds DENVER/AURORA

Run for Donuts 5K/10K/13.1 DENVER/AURORA

Father's Day Fun Run 5K/10K/13.1 DENVER/AURORA

Six Pack Series Winter Westminster 5k

Rio Frio 5k on Ice

Nielson Challenge

Six Pack Series Winter Westminster 4 mile & 5k

RMRR Feb Trophy Series

Six Pack Series Winter Westminster 5 mile & 5k

Parker Parks and Recreation Love 'em or Leave 'em Valentine's Day 5K/10K

Super Half Marathon™ & Game Day 5K™ Presented by Toyota

Running Up for Air - Staunton Rocks

Sweetheart Classic

Heart Throb 5k

Valentine Twosome Relay or Run

Six Pack Series Winter Westminster 5k and 10k

Bacon Strip Race

Funner to be a Runner

RMRR March Trophy Series

Erin Go Bragh 7.77k

The City Park Circuit

RMRR Spring Marathon Training Series #1

Run the Ranch

Dialysis Dash 5K

RMRR April Trophy Series

Donut Dash

Denver Distance Classic

Three Creeks Half Marathon

Dash for Detection: Oral Cancer Awareness 5K

RMRR Spring Marathon Training Series #3

Boulderthon is one of the fastest-growing marathons in the US and was just rated top 10 in America by USA Today and among the Best Fall Marathons by Runners World. They have a 5K, 10K, Half, Full and even a Kids Run and Stroller Race. Register now for the annual sell-out race and experience the magic of Colorado’s premier fall marathon!

Boulderthon

Marathon - New Year, New Goals Special - Full Marathon (available through 1/31)

Marathon - VIP Marathon - Best Rate Guaranteed

Marathon - Payment Plan Marathon

Marathon - Gift a Marathon

Half Marathon - New Year, New Goals Special - Half Marathon (available through 1/31)

Half Marathon - VIP Half Marathon - Best Rate Guaranteed

Half Marathon - Payment Plan Half Marathon

Half Marathon - Gift a Half Marathon

10K Presented by Cheribundi - 10K Presented by Cheribundi - Best Rate Guaranteed

10K Presented by Cheribundi - VIP 10K - Best Rate Guaranteed

Heart to Heart 5K Presented by BCH - Heart to Heart 5K Presented by BCH - Lowest Rate Guaranteed

Heart to Heart 5K Presented by BCH - VIP 5K

Kids Run - Kids Run - Best Rate Guaranteed

For 36 grand years, the Runnin' of the Green has been kicking off the "unofficial" running season with Irish cheer and a touch of luck. Be a part of the tradition and join us for a legendary Irish “Marathon” in two festive distances: the Lucky 7K and the Leprechaun Leap 2-Mile Run/Walk.Feeling the luck o' the Irish? Lace-up and chase the rainbow in Denver’s favorite Irish-themed run! Whether you’re aiming to break your best time or simply out to enjoy the post-race craic (that’s Irish for “fun,” mind you!), this event is where you’ll find the best of both worlds: serious Irish charm and seriously good times. All benefiting the Fetal Health Foundation.

HAL Sports

Lucky 7k Run / Walk - 7k Adult Entry

Lucky 7k Run / Walk - 7k Seniors Entry

Lucky 7k Run / Walk - 7k Youth Entry

Leprechaun Leap 2 Mile Run / Walk - 2 Mile Adult Entry

Leprechaun Leap 2 Mile Run / Walk - 2 Mile Seniors Entry

Leprechaun Leap 2 Mile Run / Walk - 2 Mile Youth Entry

Set in the beautiful Snowmass Village in Colorado, this team trail run offers Rocky Mountain views and stunning natural scenery. Get together in teams of 8 to tackle each of the 3 incredible trail loops, which will take you to breathtaking viewpoints and through pine forests. The buzzing atmosphere in the Ragnar Village and the finisher's medal waiting for you after your run is sure to spur you on!

Ragnar Events

Trail Colorado - Standard Team (Team of 8)

Trail Colorado - Ultra Team (Team of 4)

If you love coffee, then this is the run for you! Choose from a 5k, 10k or half marathon and enjoy the scenic route alongside your fellow runners. You'll take home a wonderful coffee themed finisher t-shirt to remember your run by.

The Best Races

5k - Standard Entry

10k - Standard Entry

Half Marathon - Standard Entry

Family 1 Mile Fun Run - Standard Entry

Virtual Run - Virtual Run Packet - 5k/10k/13.1

Running for cookies is worth the pain. This small, private group 5k, 10k and half marathon event has no shortage of cookies and cookie-themed goodies! Come for a scenic route, supportive atmosphere and the awesome cookie t-shirt.

5K Registration - 5K Registration

10K Registration - 10K Registration

13.1 Registration - 13.1 Registration

Virtual Run Registration - Virtual Run Registration

Family Fun Run (1 Mile) - Family Fun Run (1 Mile)

Celebrate the new Lunar New Year with this fantastic Fortune Run. Run a 5k, 10k or Half Marathon and take home an event t-shirt and medal. What better way to kick start the festivities!

5k - Standard 

10k - Standard 

Half Marathon - Standard 

Family 1 Mile Fun Run - Standard 

Virtual Run - Virtual Run Registration

Stand together against breast cancer by taking part in a 5k, 10k or half marathon. These small group runs are great for all ages and abilities and you'll take home a commemorative event t-shirt and medal.

Family 1 Mile Fun Run - Family 1 Mile Fun Run

Catch up with old friends and meet some new ones with this relaxing scenic run. This stress-free event is open to all paces and ages! Choose anywhere between 5k and Half Marathon distances and enjoy some free event goodies!

Virtual Run - Standard Entry

Run with your special loved one or maybe meet someone at this Valentines run. Choose from a 5k, 10k or half marathon and enjoy the scenic route as you go. You'll be treated to lots of chocolate and a fantastic themed t-shirt.

Bring some friends and enjoy a relaxing city run this February. No matter the speed, take on a 5k, 10k or Half Marathon in your own time, and receive an event t-shirt to celebrate.

Half-Marathon - Half-Marathon

Family 1 Mile Run - Virtual Run 

Family 1 Mile Run - Family 1 Mile Fun Run

Celebrate everything special about Denver with this city run. You'll enjoy a scenic 5k, 10k or half marathon and take home an awesome City Running Shirt that's Moisture Wicking and represents Dallas perfectly.

13.1 Half-Marathon Registration - 13.1 Half-Marathon Registration

Virtual Run Registration (5K/10K/13.1) - Virtual Run Registration

Get ready to paint the town green in our next-level St. Patrick's Day running bonanza! We're talking a maximum of 20 runners per wave, meaning you'll have space, support, and that personal touch to smash your run goals. And what's a celebration without perks? You'll score a swag-tastic Irish-themed running shirt and finisher's medal, and we send them straight to your door—no packet pick-up lines for you! Whether you're sprinting or strolling, young or young at heart, this fun run is all about good vibes, no timing chips necessary. But hey, if you want to time it, we've got you. Fast, fun, and full of St. Paddy's spirit, snag your spot before they vanish like a leprechaun's gold!

Celebrate Arbor Day in style at this relaxed and friendly city run. Bring your friends and family and run anywhere between 5k and a half marathon. Plus get your hands on some free event goodies.

Take part in the Fox Trot Run to celebrate friendships and the amazing community The Best Races have created. Everyone is welcome, no matter how far they run or how quick, it's all about getting out there and being together.

Jog or race at this relaxed city run. Get together with your family and friends to run between 5k and a half marathon. Run at your own pace, and receive an event t-shirt and medal.

Celebrate Earth Day in style at this relaxed and friendly city run. Bring your friends and family and run anywhere between 1 mile and a half marathon. Plus get your hands on some free event goodies.

Hop into spring with an exhilarating dash at our Easter-themed run event! Conquer distances from a family-friendly 1 Mile Fun Run to a more challenging 5K, 10K, or Half-Marathon. Remember, spots are limited, so snag yours before waves sell out, or opt for the virtual run if you miss the cut. All ages and paces are welcome—with no worries about timing chips, you can focus on pure joy and achievement. Plus, you're in for a treat with a premium running shirt, a finisher's medal, and a supportive virtual community, all with no packet pickup fuss—your swag is shipped right to your doorstep! Get ready to set off on a stress-free run that’s all about hope, joy, and community this Easter.

Bring some friends and enjoy a relaxing city run this May. No matter the speed, take on a 5k, 10k or Half Marathon in your own time, and receive an event t-shirt to celebrate.

Celebrate the iconic Cinco De Mayo at this themed run. Bring your friends, dress to impress and choose between 1 mile, 5k, 10k and half marathon distances. Come for the event t-shirt and finisher's medal.

Running for donuts is worth the pain. This small, private group 5k, 10k and half marathon event has no shortage of donuts and donut-themed goodies! Come for a scenic route, supportive atmosphere and the awesome donut t-shirt.

Family Fun Run (1 Mile) - Family Fun Run (1 Mile) 

Celebrate Father's Day at this relaxed city run. Get together with your family and friends to run between 5k and a half marathon. Run at your own pace, and receive an event t-shirt and medal.

Get ready to hit the pavement in Westminster for an exhilarating journey of perseverance and fun! From first-timers to seasoned runners, our progressive series is your chance to evolve from a 1-mile dash to a triumphant 10k finisher in a series of events. With each race, you'll push your limits, adding a mile to your tally, all in the spirit of friendly competition without the pressure of a 'big race' atmosphere. Join fellow enthusiasts in an environment that celebrates every pace and stride. Plus, as a token of your achievement, snag a Six Pack Series Collectable Pint Glass when you cross the finish line! And don't miss out: this page is your gateway to join the third event's thrilling 5k!

RunSignup

Get ready to lace up your spikes for America's most extraordinary 5k experience on January 27th, 2024! Picture yourself sprinting across the frozen expanse of the Rio Grande, surrounded by the stunning San Juan and Sangre de Cristo mountains. And don't worry about slip-ups; a fresh layer of snow ensures your shoes have got your back. It's no surprise Runner's World Magazine spotlighted this event — it's spiked with chip timing and "cool" ice-themed awards for every skill level!    Should Mother Nature flex her muscles, we've got the perfect backup with a similar chilly thrill on Blanca Vista Park's frozen pond and charming levee trails. So, no matter what, you're guaranteed an icy escapade! For the best grip, think microspikes or any sturdy treaded shoe. Ready your soles the night before or the morning of the race, with easy pickup options for your race gear. This isn't just a race; it's a polar adventure waiting for you!

Rio Races

Get ready to lace up your running shoes for our monthly 2-mile dash, where it's not just about speed – it's about outpacing yourself! The excitement kicks off bright and early at 8:00 A.M. on the first Saturday of every month, but don't be late; the start line closes at 8:05 A.M. sharp!    Newbies, you'll set your base time to beat in future races, while vets race against their personalized handicaps, designed to level the playing field. The real thrill? It's anyone's game, as the underdogs have a shot at glory, thanks to a handicap that favors the diligent and emerging athletes. Push past your limits and the biggest improvement lands you a stylish Nielson shirt, a testament to your progress, courtesy of the amazing folks at EON Studios. Whether you're chasing a new personal best or finding your footing, each race is an opportunity to gauge your fitness, set against the backdrop of consistency and camaraderie. Join us, hit the pavement, and race for that breakthrough!

Pikes Peak Road Runners

Ready to hit the ground running in a way that's both exciting and accessible? Dive into our vibrant Westminster series, tailored to those lacing up for the very first time and seasoned sprinters alike! Kick-off with a swift 1-mile dash and build up your stamina, mile by mile, until you're soaring through a full 10k. With a no-pressure vibe, our series is the perfect starting block for anyone looking to experience the thrill of the race without the big-event jitters. And here's the best part: cross the finish line and snag a Six Pack Series Collectable Pint Glass to toast to your achievements! Remember, this page is your gateway to the fourth event, offering both a 4-mile challenge and a 5k option—choose your distance and run your own race!

Join the Rocky Mountain Road Runners for our thrilling monthly run in Denver! We pride ourselves on providing a relaxed and budget-friendly racing experience through our unique Trophy Series. Participants kick off with a handicap start – the 11km racers begin at 9:00 am, with the swiftest pacing themselves for a 30+ minute delayed start, while 5k enthusiasts hit the ground running roughly 15 minutes later. Make sure to arrive by 8:30 to check in, snatch up your bib, and get that all-important warm-up in at scenic Centennial Park. You’ll be running a beautiful paved course by the Platte River and soaking in that community spirit along the way!

Rocky Mountain Road Runners

Get ready to hit the ground running with our Westminster Six Pack Series! This unique event is perfect for anyone who wants to ease into the racing scene. You’ll start with a manageable 1-mile race and gradually increase the distance, building up to a full 10k finale. Whether you're just starting out or you’re an old hand at racing, we welcome you to join our fun, non-intimidating environment.    As you cross each finish line, not only will you bask in the glory of your achievement, but you'll also collect an exclusive Six Pack Series Pint Glass to commemorate your progress! And if you're hopping in at the fifth event, choose between a 5 mile or 5k distance – tailor your challenge to your comfort level. Ready to be part of something amazing? We can't wait to see you there!

Ready to outrun Cupid or race into the arms of Valentine's Day fun? Get your heart racing at the Love 'em or Leave 'em Valentine's Day 5K/10K! Whether you're a seasoned runner or looking for a lively way to spend time with loved ones, this event promises a rush of endorphins and a plateful of pancakes waiting at the finish line.    Mark your calendars for February 10, 2024, and lace up for a 10 a.m. start for the 10K or a 10:05 start for the 5K at Salisbury Park. With registration fees of $50 for the 10K and $40 for the 5K, don't dawdle because prices hop up by $5 after January 27. Your sign-up secures a professionally timed race, a warming long-sleeve shirt, a bib, and that satisfying pancake breakfast – all while supporting a fabulous cause. Last dash to sign up for guaranteed shirt sizes is January 21. Let's make hearts pound for a purpose – join us, rain or shine!

Parkerrec

Get ready to dash through the vibrant streets of downtown Colorado Springs in our electric Super Half Marathon & Game Day 5K on Super Bowl Sunday, Feb.11, 2024! It's not just a run; it's our Super Sunday Tradition that brings over 1,500 runners to chase glory on a flat and fast course. Gear up with ease at our indoor packet pick-up, then after your triumphant finish, join the lively post-race celebration at Jack Quinn's Irish Pub complete with awards! You're not only hitting the pavement for personal bests but also supporting the remarkable efforts of the Pikes Peak Road Runners who champion running and wellness in the region. Don't sit on the sidelines – pick your distance and sprint into the game with us!

Get ready to push your limits and breathe life into the change we all wish to see! The Up For Air Series beckons you to be a part of an endurance event with a purpose – battling for better air.    Join us in the scenic Staunton State Park, Colorado, for the Running Up For Air - Staunton challenge. Whether you’re a solo endurance veteran or a team player, choose to run 3, 6, 12, or 24 hours through snowy trails, tackling over 1600 feet of elevation with each 7.1-mile loop this February. But it's more than a race; it's a call to action. As a participant, your strides fuel the fight for cleaner air with proceeds aiding organizations like Protect Our Winters and Conservation Colorado Education Fund.    Raise 10X your entry fee, and you don't just race for glory, but for free – now that’s a breath of fresh air! Embrace the chill, embrace the challenge, and join us on February 23-24, 2024. Let's run, raise, and rally for the air we share!

Up For Air Series

Get ready to lace up for love and fitness at Sweetheart City Racing's headline event! This annual thrill will be at the heart of the Loveland Sweetheart Festival – Love, Locks and Lights. Dive into the excitement with our 4-mile race, winding through the picturesque River’s Edge Natural Area, starting in vibrant Downtown Loveland.    Be there early to snag parking and prepare for the 2:30 p.m. launch on February 10th, 2024. By participating, you're not just chasing personal bests but also supporting local school cross country teams. Plus, register by January 30th to lock down your commemorative shirt! All registration happens online – even on race day.    Shrug off the weather worries; we run come rain or shine! For those who can't make it in person, virtual packets are ready for pick-up or delivery. Embrace the spirit of the race – join us as we champion community, health, and the power of perseverance!

Sweetheart City Racing 

Get ready to ignite your heartbeat with the most thrilling run of the year! Join us at Johnny Roberts Memorial Park for the 'Heart Throb 5k' – the ultimate pre-Valentine's Day bash where running pairs with celebration. Whether you dash, trot or walk, this flat and speedy course is your ticket to a guilt-free Valentine's indulgence. Remember, it's not about speed, but the pulse of fun pushing you forward. Embrace the throb, earn your treats, and become a Heart Throb champion. Sign up now and let's get those hearts racing!

Get ready for the most whimsical dash of your life — the City Park Costume Relay Race! Grab a partner, don your most outlandish outfits, and sprint through a 1.6 mile lap of fun, each wielding a quirky baton. It's just $10 per dynamic duo if you sign up early, or $14 on the day, so hustle and save that cash! We're kicking things off by the fountain where there's plenty of space, shelter, and restrooms.    But hold onto your running caps, because the stakes are deliciously high — winning teams will earn chocolate awards for the Biggest, Most Romantic, Most Creative, and even the Ugliest Baton! Friendly competition is key here as we aim for inclusivity, especially in our combined age group awards tailored for coed fairness. So, are you up for the challenge? Think big, think funny, and let's make those batons unforgettable!

Get ready to challenge yourself and embrace the thrill at our unique Six Pack Series in Westminster! Kick off your journey with a manageable 1-mile race and build up your stamina as you advance through the series, adding a mile each time, until you conquer the full 10K distance. Catering to those new on the running scene as well as seasoned pavement-pounders, this series is your chance to participate in an exhilarating event without the big race jitters. No matter your speed or skill level, victory will be sweet – and not just because you crossed the finish line, but because you'll nab an exclusive Six Pack Series Collectable Pint Glass, too! On your marks for an unforgettable experience and remember, the final event offers you a choice between a splendid 10k or a swift 5k dash!

Get ready to lace up and hit the pavement for the most sizzling run of the year! We're excited to announce the combination of the Bacon Strip Races with the Horsetooth Half Marathon Training program for a thrilling 10-mile or 4-mile challenge that will get your heart racing and your spirit soaring. As always, we're keeping it community-focused and asking for a suggested $20 donation to help cover the essentials like porta-potties, participant gifts, and let's not forget, the all-important BACON! Whether you're here to set a new personal record or just to embrace the joy of running with friends, this is your moment to shine. Come join the fun – we can't wait to see you there!

Get ready to dash, sprint, and run your heart out at the Spring Run Off's free race for the young athletes in grade 8 and under! With over 450 kids gathering in past years, we're excited to see an even bigger turnout this time. Make sure to register quickly and be at the football field by 10:30 a.m. to join the fun!    Kiddos in Kindergarten and younger, kick off the action at 10:45 a.m. with a swift 50-yard dash across the 50-yard line. Grade-schoolers, take your mark at the BLUE balloons for a thrilling new 1.2-mile run starting at 10:50 a.m., followed five minutes later by a second group—led by our awesome lead bikes. And for the little troopers in grade 3 and under, the RED balloons are your starting beacon at 10:55 a.m. for the same energetic race!    Let's not only race for fun but also school pride! Gather on the field at 11:10 a.m. and cheer for the top three schools with the most participants. It's a beautiful course leaving the stadium and meandering to Wild Horse Creek and back—challenging enough for a champ, simple enough for beginners. On your marks, get set, go create unforgettable memories!

Get ready to hit the ground running at the Rocky Mountain Road Runners' next monthly race! Set in the picturesque Clement Park in Littleton, Colorado, you’re in for a serene yet spirited run around Johnson Lake. Whether you're a seasoned marathoner or a weekend jogger, this inclusive 5k is the perfect playground for all.    Feel the adrenaline as you race with a unique format that levels the playing field; your start time is based on your estimated pace, maxing out the fun for everyone! Connect at Boulder Running Company for an 8:30 am check-in and get set to chase the thrill at 9 am sharp. With two joyous loops around the lake on paved paths, this race is all about community, competition, and the pure joy of running. Don't miss out, stride alongside us!

Ready to experience THE LUCKIEST race on earth? Dive into the spirit of St. Patrick's Day with our annual Erin Go Bragh 7.77k! This isn't just about the run; it’s a full-blown celebration with a cascade of Lucky Charms at your fingertips, an outrageously fun costume contest, and a dance party that'll have you jigging all the way to the finish line. And hey, while there may not be a pot of gold waiting, you'll score the coveted Erin Go Bragh 7.77k green t-shirt—because who doesn't love race swag? Mark your calendars for the jolliest jog of the year on March 16, 2024, in Westminster, CO. Get ready to go green and go great!

Get ready to push your limits in the heart of Denver! Denver Athletics presents the exhilarating 2025 Denver Park Circuit Series — three adrenaline-pumping races across Denver's most iconic parks. Each park sets the stage for you to race one lap at your absolute fastest. Embrace the challenge at City Park in spring, power through Cheesman Park in summer, and finish strong at Wash Park come fall.    This series isn't just for the seasoned athletes; races cater to all ages and skill levels, including a special free dash for kids 10 and under. Join as a Denver Athletics Road Racing or Full Member for complimentary event entry. Enjoy a race-day experience brimming with energy — think pulsing music, an enthusiastic emcee, vendor stalls, and a post-race bash to celebrate your achievements. Plus, vie for the top in the series standings and you could be crowned a champion in your category! Ready, set, race toward your new personal best!

Get ready to hit your stride with RMRR's upcoming races! Whether you're gearing up for major marathons in Boston, Colorado, or Colfax, or want to push your personal boundaries, we've got your back. Practice your pace, hydration, and race-day strategies with our low-cost, welcoming events designed for every runner.    Choose from our three spring offerings: a 10 or 20-mile race on 3/24 or 4/28, or the third annual Blue Heron Half Marathon on 4/21. Bundle up races to keep your momentum high! All races kick off bright and early at 8 a.m., with the 10 and 20-milers running out-and-back on Platte River Trailhead Park. Catch the Blue Heron at Riverdale Regional Park for a scenic run to remember. Note: For everyone's safety, please leave your four-legged friends and running strollers at home. Join us and let’s make those miles count!

Get ready to hit the trail with heart-pumping excitement at Loveland, CO, where we're hosting our 5th annual trail race extravaganza in favor of the Heart J organization! Choose your challenge from six stunning distances and conquer diverse terrains that promise to keep every step interesting at the picturesque Sylvan Dale Guest Ranch. Whether you're swift on the 5K, tenacious in the 10K, or ready to push limits in the 4hr, 6hr, or 12hr solo and 4-person relay races, we've got you covered with an all-inclusive meal ticket to fuel your triumph. Revel in the splendor of nature, indulge in a spread at our oasis of an aid station, and relish the glory with finisher awards. But remember, as the sun sets on the Sylvan trails, be sure to have your bib on—it's your golden ticket to this thrilling adventure!

Get ready to dash for a great cause at the Dialysis Dash 5K! Come join us on a beautiful Sunday morning, June 2, 2024, and be a part of something big. Set in the picturesque Matchett Park, you'll be treated to breathtaking views of the Bookcliffs and the Grand Mesa as you run, walk, or roll through the course. Whether you're a seasoned athlete or trying out your first 5K, we welcome everyone regardless of age and ability, including those with adaptive equipment. But the fun doesn't stop at the finish line—stick around for our Kidney Health Fair to dive into everything about kidney wellness and meet some amazing vendors. Let's make a difference together!

Embrace the energy of spring with our City Park 4 Mile Run! As April unfurls its beauty, join the RMRR in a celebration of the new season with a fun-filled run around the park and zoo. With typically fantastic spring weather to bolster your spirits and an open invitation for all, this event is the perfect excuse to lace up those running shoes.    Race day kicks off at a bright and early 9:00 am for our first wave of runners. Check-in at the Pavilion, but remember to arrive a good 45 minutes early to find parking, snag your tag, and get in a proper warm-up. Your course? The smooth asphalt roads of Denver's picturesque City Park – a runner's delight!

Get ready for the sweetest race around – the Donut Dash 5K! This is where the streets of Denver transform into a fast, flat racing wonderland with a sugary twist at the end. Whether you’re here to set a new personal best or just walk and soak up the vibe, you’re in for a treat! Imagine crossing that finish line and being greeted with the heavenly scent of fresh donuts – that's how we celebrate fitness and community. So lace-up, show up and let's dash for the donut bash!

Get ready to ignite your passion for running under the glowing lights at Randy Penn Stadium! Denver Athletics and Good Boys Running Club have teamed up to present an electrifying all-comers track meet that promises a night of thrilling competition and community spirit. Whether you're a speedy sprinter or a long-distance dynamo, pick from events like the 400-meter dash, 800-meter run, 1600-meter run, 3200-meter run, or team up for the exhilarating 4x400 meter relay.    This celebration of speed is open to everyone—kids, adults, novices, and pros—so lace up and unleash your potential. Between races, you can vibe to great music, cheer on fellow athletes, win prizes from local sponsors, and treat your taste buds to amazing food truck eats. Don't miss out on this inclusive event where energy soars and community thrives!

Get ready to lace up your running shoes for Denver's signature springtime challenge at Cherry Creek State Park - the thrilling Three Creeks Half Marathon! On Saturday, April 7, 2024, join us for a remarkable race day that's designed to be flat, fast, and absolutely scenic. Imagine sprinting through the lush landscapes beside Cherry Creek, Windmill Creek, and Cottonwood Creek, where the terrain is a gentle mix of road and trail, promising only a modest elevation gain of 291 feet over 13.1 exhilarating miles. You won't want to miss out on the 10th annual celebration of this beloved event. So come make memories, set personal records, and enjoy the camaraderie of fellow runners in a half marathon that's as fun as it is picturesque!

Threecreekshalf

Unite with the Academy of General Dentistry and make strides in the battle against oral cancer at our charged-up 5K event in Denver's City Park this April \_\_\_. Lace-up your sneakers for a race with a cause—raising critical awareness and support to tackle a disease that's projected to affect thousands this coming year. Oral cancer is a silent adversary, often marked by persistent sores, lumps, or odd discolorations in the mouth, but together, we can shout out the risks and push forward towards solutions. Remember, your preparation starts with a swift packet pick-up at 9:00 AM, right before the main event kicks off at 10:00 AM. Get ready to run, raise awareness, and reap the rewards of your commitment to a healthier world!

Get ready to hit the ground running with RMRR's Marathon Training Series! Whether you're a seasoned marathoner or a first-timer, our events cater to all skill levels, offering a supportive and officially timed race experience. Choose from 10 and 20-mile races on March 26 & April 23, and don't miss the excitement of our Inaugural Blue Heron Half Marathon! These races are a perfect fit for your spring marathon training calendar, with a clear course, mile markers, and aid stations stocked with essentials. Achieve your personal best while enjoying the camaraderie of fellow runners, where winners earn ribbons and shopping sprees at running stores. RMRR members enjoy a discount, and race-day registrations carry a small extra fee. Please note, to ensure safety for all, leave your furry friends and strollers at home. The action kicks off at 8 am at Platte River Trailhead Park—be there!

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Running Events in Colorado 2025-2026

28

Boulderthon 2025: The Boulder Marathon

9

Runnin' of the Green

6

Ragnar Trail Colorado

25

Run for Coffee 5K/10K/13.1 DENVER/AURORA

25

The Cookie Dash Run 5K/10K/13.1 DENVER/AURORA

1

Lunar New Year Fortune Run 5K/10K/13.1 DENVER/AURORA

1

Together Against Breast Cancer 5K/10K/13.1 DENVER/AURORA

15

Singles & Friends Running Club DENVER/AURORA

15

Valentines Live, Love, RUN 5K/10K/13.1 DENVER/AURORA

22

The Sloth Run 5K/10K/13.1 DENVER/AURORA

22

Muffin Marathon 5K/10K/13.1 DENVER/AURORA

15

St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORA

15

Arbor Day Run Green 5K/10K/13.1 DENVER/AURORA

29

Fox Trot Race 5K/10K/13.1 DENVER/AURORA

29

Run DENVER/AURORA "The Mile High City" 5K/10K/13.1 Race

19

Earth Day: Run GREEN 5K/10K/13.1 DENVER/AURORA

19

Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA

3

Sloth Runners Race 5K/10K/13.1 DENVER/AURORA

3

Cinco De Mayo Run: Against All Odds DENVER/AURORA

14

Run for Donuts 5K/10K/13.1 DENVER/AURORA

14

Father's Day Fun Run 5K/10K/13.1 DENVER/AURORA

25

Six Pack Series Winter Westminster 5k

25

Rio Frio 5k on Ice

1

Nielson Challenge

1

Six Pack Series Winter Westminster 4 mile & 5k

2

RMRR Feb Trophy Series

8

Six Pack Series Winter Westminster 5 mile & 5k

8

Parker Parks and Recreation Love 'em or Leave 'em Valentine's Day 5K/10K

9

Super Half Marathon™ & Game Day 5K™ Presented by Toyota

14

Running Up for Air - Staunton Rocks

15

Sweetheart Classic

15

Heart Throb 5k

15

Valentine Twosome Relay or Run

22

Six Pack Series Winter Westminster 5k and 10k

23

Bacon Strip Race

2

Funner to be a Runner

2

RMRR March Trophy Series

15

Erin Go Bragh 7.77k

22