Summit Trail Running Series I

Summit County Allocation Park 639 Landfill Road, Dillon, 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 […]

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

A four day running event for runners of all levels featuring:  Complete the 4 mile out and back route as many times as you can in the 3, 6, 9, 12, 24 or 48 Hour events as an individual or relay team 2x2x24 - Run or walk 2 miles every 2 hours for 24 hours […]

Dog Jog 5K

Laramie Community College 1400 E College Dr, Cheyenne, WY, United States

The Dog Jog 5k is back and better than ever! Join the pack and run for a cause. This dog friendly 5k welcomes runners and walkers of all ages (even in dog years!) with the goal of raising funds for the pets and programs of the Cheyenne Animal Shelter.

$35

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.

Narrow Gauge 10 Mile

Fort Lewis College 1000 Rim Dr, Durango, CO, United States

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 […]

Mountain Madness Orienteering Race

Staunton State Park 12102 S Elk Creek Rd, Pine, CO, United States

Mountain Madness: The Ultimate Team Orienteering Challenge! Teamwork, strategy, and adventure await in Mountain Madness—Colorado’s most exhilarating team orienteering trail race!  In this two-hour, all-terrain challenge, teams must rely on map and compass skills—no GPS allowed!—to navigate the rugged wilderness and collect as many checkpoints as possible before time runs out. There’s no set course—only […]

BolderBoulder 10K

Folsom Field 2400 Colorado Ave, Boulder, CO, United States

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

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 […]

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