Mighty Mustang 5K

Gunnison Middle School 1099 N 11 ST, Gunnison, CO, United States

The Mighty Mustang! $20/event or $55/family *family rate applied at checkout*

Dash & Dine 5K

Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

The Dash & Dine 5k run, Boulder’s favorite spring tune-up run series is back for 4 races on Tuesday nights in April & May at the beautiful Boulder Reservoir in Boulder, CO. Run A great event for runners of all ages and abilities. This family-friendly 5k out-and-back course follows the roads and dams on the […]

$30

Blue Moon Trail Series I

Pinon Valley Park 5585 Mule Deer Dr, Colorado Springs, CO, United States

The Blue Moon Trail Run is a fun and challenging local race provided by the City of Colorado Springs Parks, Recreation and Cultural Services Department. The 3-time run series is offered on the fourth Friday evenings of May (5K), June (5K and 8K), and July (5K and 10K). In addition to the race series, a Reverse Biathlon […]

Weld Your Mettle

Frank State Wildlife Trailhead 32560 Colorado Blvd, Windsor, CO, United States

Welcome to the annual Weld Your Mettle Ultra: 50K, Heavy Marathon, Heavy Half Marathon, and 7k run, walk or ruck, brought to you by the run.Windsor Race Series. Held on the Poudre River Trail. Connecting Windsor to Greeley, this race will strengthen your resiliency when faced with adversity and challenges. All distances are "heavy", meaning […]

Canceled Colorado Run

Spring Canyon Park 3156 S Overland Trail, Fort Collins, CO, United States

Celebrate Memorial Day weekend with the Colorado Run 5K/10K! Walk, Jog, Run, Race, or Ruck the Totally Tough 10k along Horsetooth Reservoir or enjoy the flat and fast 5k in Spring Canyon Park. Post-race party with live music and awards.

$25 – $55

Valley Bottom Rio Trio

State Ave River Trail Access 6901 N River Rd, Alamosa, CO, United States

Alamosa Parks and Recreation and Adams State Adventure Programs are partnering to bring the San Luis Valley the first annual “Valley Bottom Rio Trio”; an adventure-style triathlon race within the City of Alamosa on June 12th. This fully chip-timed race will feature an 8-mile trail bike ride, a 3-mile paddle on the Rio Grande, and a 5k run.

Front Range Classic

The Englewood Campus Stadium 3800 S Logan St, Englewood, CO, United States

Denver Athletics and Boulder Road Runners are teaming up to bring you a meet that will determine which city has the best Track & Field team in Colorado! The Front Range Classic is a team-scored meet between Colorado's primary cities- Denver, Boulder, Fort Collins, and Colorado Springs. Athletes will select a team when registering and […]

Angel Run 5K/10K

Red Leg Brewing Company 4630 Forge Rd, Suite B, Colorado Springs, CO, United States

Please join us on Memorial Day for the 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 accomplish […]

$30

Memorial Day 5K

Imperial Memorial Gardens Cemetery 5450 CO-78 West, Pueblo, CO, United States

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 […]

Summit Trail Running Series II

French Gulch French Gulch Rd, Breckenridge, CO, United States

Explore 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 […]

Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.