Friends of First Responders 5K/10K

Hudson Gardens and Event Center 6115 S Santa Fe Dr, Littleton, CO, United States

The Colorado Friends of First Responders (CFoFR) annual 5/10K Memorial Event is dedicated to the memory of those who lost their lives on the scene of an AirLife Denver medical helicopter crash that occurred in 1997. This event keeps their memories alive, while also supporting the mission of Colorado Friends of First Responders (CFoFR), and […]

Heart & Sole Half Marathon

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

On Mother's Day, May 12th, 2024 the Heart & Sole Mother's Day Half Marathon, 10K and 5K returns to Boulder County! We will have so many amazing opportunities at this event. In this year's edition of the Heart and Sole races, brought to you by locally-owned 303 Running, we're excited to host many Mother/Daughter and […]

Head and Neck 5K

Carpenter Park 3498 E 112th Ave, Thornton, CO, United States

Get ready for a 5K & 2-Mile walk that begins and ends at the beautiful Carpenter Park. Participants can join us for an in-person run or walk run on their own time with our virtual option. All participants who register by the shirt cutoff date will get a popular soft-style t-shirt! Head & Neck cancer […]

Memorial Day Run and March

Douglas County High School 2842 Front St, Castle Rock, CO, United States

Colorado Veterans Project is set to host the eighth annual Memorial Day Run & March, which will raise funds and collect non-perishable food donations for local veterans experiencing homelessness. Athletes may participate in a 5K, 10K or 30K run, or choose to ruck march, where each athlete will carry a 25-pound rucksack filled with non-perishable […]

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*

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 […]

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 […]

REVEL Rockies Marathon

Bandimere Speedway 3051 S Rooney Rd, Morrison, CO, United States

This incredibly fast and remarkably beautiful downhill road race takes runners from the forests and canyons of the Rocky Mountains to the foothills of Denver, Colorado. Featuring a perfectly smooth downhill slope and spectacular scenery, this race will be sure to help you set your PR and finally hit that Boston Qualifying time. This event […]

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