Event details subject to change. Please confirm all information via event website.
Canine On the Creek 5K
Gather your family and friends, including your furry friends—don't forget Fido! Grab your running (or walking) shoes and join us in supporting FOCP (Friends of Charlie's Place), the Clear Creek and Gilpin County Animal Shelter, and CCMRD Youth Programs. The exciting course takes you through both paved and dirt trails along the picturesque Clear Creek. […]
Dash and Dine 5K #4
Boulder Reservoir 5565 N 51st St, Boulder, CO, United StatesThe Dash & Dine 5k run, Boulder’s favorite spring tune-up run series is back for 4 races in May at the beautiful Boulder Reservoir in Boulder, CO.
Turquoise Lake 20K
The Turquoise Lake 20K offers unparalleled mountain views as you run clockwise around scenic Turquoise Lake. The first 7.5 miles of the course consists of hilly paved road. The final 5.5 miles consist of single track dirt trail.
Farish Trail Race
Date: May 23, 2026 Location: Farish Recreation Area at 12005 Rampart Range Rd Woodland Park, CO 80863 Start times: 7:00 am – 8:00 am Distance: Half Marathon, 10K, 5K 1 Mile Kids Fun Run (Free) Prizes: Top 3 Male and Female in the Half, 10K, and 5K First 200 Finishers Receive a limited edition race […]
Samson’s Revenge Trail Race
Samson was the celebrity elk of the Rockies until he was illegally poached in 1995 on YMCA grounds. Our race runs on Samson's home turf, The YMCA of the Rockies, which his descendants still call home. The course is fast single track with a big King of the Mountain challenge slapped in the middle. This […]
Mile High Mile
The Mile High Mile Saturday, May 23 | Boulder High School The Mile High Mile is back for its 8th season—bringing a high-energy night of racing to Boulder for runners of all ages and abilities right at the heart of the Boulder Creek Festival and all the excitement of Memorial Day weekend in Downtown Boulder. […]
Narrow Gauge 10 Mile
Since 1978 the Narrow Gauge 10 Mile Run has been one of Durango’s oldest Memorial Day traditions. The 10-mile course showcases the Fort Lewis College rim, the Animas River Trail and great views of Durango! This is the longest continuously run road race in Colorado. In 2021, even with COVID, we had a temporary race […]
BolderBoulder 10K
We’re not sure when or how it happened, but somewhere along the way our little run in Boulder, CO turned into an event of epic proportions. We like to think it’s part race, run, jog, walk, parade, celebration and tribute. We made it for everyone.
Angel Run
Please join us on Memorial Day for the 5th Annual Angel Run in support of the local, veteran-owned 501c3 non-profit organization, Angels of America's Fallen! Gather at Red Leg Brewing for the in-person 10k and 5k run/walk or participate virtually. All proceeds of the event will be donated to Angels of America's Fallen to help […]
Memorial Day 5K
Join us for our Memorial Day 5K Fun Run & Walk at Imperial Memorial Gardens Cemetery and Funeral Home, honoring our fallen heroes while supporting victims of domestic violence. Registration is absolutely free, and all we ask is that you bring a donation of clothing or other items to support victims of domestic violence. If […]
Pyro’s River Trail Run
Honor our fallen hero and all those who have paid the ultimate sacrifice for our freedoms on Memorial Day. Choose to run the family friendly 3.5K along the beautiful Colorado River or challenge yourself on the 7.7K up the scenic mountainside then returning to the river valley. Following the race stay for the barbecue and […]
Weld Your Mettle
Join us for three days of running excitement! Whether you're tackling the events individually or teaming up for relays: 14 mile, full marathon, 50k, 5 miles 100k,100 miles, or taking on a 7K Run or Ruck, - there's an event for everyone. Experience the thrill of friendly competition and the energy of a supportive community! […]
North Fork Trail Race
The North Fork 50 Mile/50K is 100% trails, mainly single track and some double track, starting and finishing along lovely Buffalo Creek, in the mountains about 50 miles southwest of Denver. This is a pure ultra, a very special and unique race, deliberately kept small so each runner gets personal attention. There are no non-ultra […]
Elk Meadow Trail Race
Buchanan Park Recreation Center 32003 Ellingwood Trail, Evergreen, CO, United StatesCome run with us in beautiful Evergreen at picturesque Elk Meadow Park! This race day will offer both a 10k and a 5k, running through the rolling hills of Elk Meadow. Play fun games from our rec trailer, visit our sponsors and vendor tents while you wait for your runner to finish! Refreshments and food […]
Mike the Headless Chicken 5K
Start your festival day with a race that’s anything but ordinary. Whether you're sprinting, jogging, or walking in costume, the Mike the Headless Chicken 5K is the perfect way to kick off one of Fruita’s quirkiest and most beloved events.
Pilot Hill 25K
The Pilot Hill 25K Classic is the oldest continuously run footrace in Wyoming. The race has its roots back in the 1970’s when a group of local runners and university cross country team members decided to begin their summer training by racing from Laramie to the top of Pilot Hill and back down. At that […]
Durango Trails Backyard Ultra
A Backyard Ultra is also known as a Last Person Standing Race, but don’t let this deter you from joining the fun! Complete 4.17 miles of dirt road and single track trail every hour on the Spurline Trail system in Durango. Each 4.17 mile loop is referred to as a “yard.” If you finish in […]
The PASTA Run
We are runners...and grew up running in the 1980's. Back then it was a ritual to CARBO Load the night before any race and we all love pasta...Runners love pasta...so we are bringing the 2 together, but in a different order! RUN then Eat...listen to some Italian Music, have some Ice Cream and enjoy some […]
Vitality Walk
Eagle Rim Park 2736 Cheyenne Dr, Grand Junction, CO, United StatesYour participation in Vitality Walk helps Parkinson Association of the Rockies (PAR) push boundaries and invest in programs and services that are a lifeline to those with Parkinson’s, their Care Partners, and their families. 100% of the proceeds stay in communities throughout Colorado and Wyoming to help us provide free services, including: assessments, 50+ support […]
Walk MS
Lion's Park - Cheyenne 789 S Lions Park Dr, Cheyeene, WY, United StatesWalk MS includes a powerful new experience where you’ll witness how your support changes the lives of people with MS and gets us closer to our ultimate goal: a cure. Whether you live with MS, love someone who does, or are a part of the wider community, you can proudly display your role in the […]
Angelman Strong Superhero 5K
Calling heroes of every age and ability - we need you! We're coming together to support something bigger than ourselves -- the Angelman Strong Superhero 5K & All-Abilities Fun Run. This is more than a race, it's a mission -- a mission to support those living with Angelman syndrome, a rare condition that effects communication, […]
Harvest Moon Triathlon
Est. in 2000 this Colorado classic provides the veterans to beginners a challenging, affordable, and competitive race with a local flavor. Whether this is your first event of the season, or a tune-up for a summer long course triathlon, don't miss the Harvest Moon! The Aquabike portion is one of the fastest growing Aquabikes in […]
Reuter-Hess Trail Run
10k, with 600′ of elevation gain, on the trails at the Reuter-Hess Incline and Reservoir, in Parker. After 1/3mi, you climb an incline/challenge hill. The rest of the course is on rolling terrain, a mix of fairly smooth and somewhat rocky. Enjoy great views across the panorama of the front range. Staggered starts (Dipsea style) […]
Fish Hatchery 5K
Located at the historic Leadville National Fish Hatchery, the Fish Hatchery 5K features a scenic cross country style course that winds through subalpine forest near and around the Evergreen Lakes and lower Rock Creek area. The route consists of dirt road, path and trail.
Tails on the Trail 5K
The Tails on the Trail 5K is a family and dog-friendly 5k race with proceeds benefiting the life-saving work of Ark-Valley Humane Society. Race this with or without your dog on May 22nd at Loyal Duke's Dog Park in Salida.
Best Buddies Friendship Walk
The Best Buddies Friendship Walk is the leading event in the country supporting inclusion for people with intellectual and developmental disabilities (IDD). Join 50,000 participants at 70+ Walks across the globe to support the Best Buddies programs in schools, workplaces, and communities. You’ll be making the world more welcoming to people with IDD — one […]
Summit Trail Running Series I
Summit County Allocation Park 639 Landfill Road, Dillon, CO, United StatesExplore the trails of Breckenridge this summer with the 23rd annual Summit Trail Running Series with each race followed by a post-race party! The Series consists of 5 trail races in and around Summit County, May-July. Each race features a short and long course, and all races are open to runners of all abilities ages […]
The Big Run 5K
Celebrate what makes running fun — high-fives, endorphins, good friends. Come hang with Fleet Feet on Global Running Day, run a breezy 3.1 miles and make The Big Run an epic party.
Rocky Dog Fun Run
Vail Village 292 E Meadow Dr, Vail, CO, United StatesGet your pup involved at the GoPro Mountain Games with this unique event! Bring your four-legged friend along for a 5K fun run/walk on Vail Mountain. Dogs and humans of all abilities and sizes are encouraged to participate in the most wholesome event of the weekend! With a start and finish at Nature Valley Mountain Plaza, this event will […]
Boulder Stroke & Stride I
Boulder Reservoir 5565 N 51st St, Boulder, CO, United StatesThe Boulder Stroke & Stride 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. Stroke & Stride happens weekly on Thursday nights throughout the Summer from June 4th to August 6th WITH THE EXCEPTION OF Thursday June […]
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