Event details subject to change. Please confirm all information via event website.
Glow and Roll 5K
Glow & Roll is an inclusive, dusk-time 5K Walk/Run/Roll (with a 1.6-mile option). A glow-filled, twilight experience with lights, music and day-glow swag that transforms the event into a celebration under the evening sky. Movement in all forms is welcome whether you walk, run, use a wheelchair, or dance your way through the course. Creative […]
RMRR Fall Marathon Training Series
Riverwalk Ballfields 9830 Riverdale Rd, Thornton, CO, United StatesRMRR’s Marathon Training Series provides 10M and 20M races that are low cost, friendly, fully supported, and officially timed. All you need to do is focus on your running! Our races fit perfectly in training schedules for Colfax, Boston, New York, Chicago, and other full and half marathons. Everyone is welcome at our MTS races: RMRR members, […]
Bluffs 8K Trail Run
Prairie Sky Park 10249 Ridgegate Circle, Lone Tree, CO, United StatesThe Bluffs 8K Trail Race has rolling hills and beautiful views as you run or walk through the Bluffs Regional Park. The race will start/finish near the Prairie Sky parking lot o n August 28th.
Louisville Fall Splash & Dash
Get ready for a fun, energetic racing experience! The event features an indoor swim in the Louisville Rec Center pool, followed by a run on the outdoor trail. This series is open to kids ages 5–14. Age Groups & Distances 5–8 yrs: 50-yard swim / 0.65-mile run 9–11 yrs: 100-yard swim / 1.3-mile run 12–14 […]
Wine Run 5K
Join us on Sunday, August 30, 2026 for an exciting annual event that features the amazing scenery and landscape of The Winery At Holy Cross Abbey! Due to the huge turnout, we will have 2 start times for the event (9:30am and 11am). You'll select a start time when you sign up. Since July 2002, […]
Front Range Ultra Dayze
Welcome to Front Range Ultra Dayze! 100 hours of ultra-running madness! Our goal is to bring people from all over the U.S. together for a festival of ultra-running in Loveland, CO. All distances are ultra-distances, because there’s no community like the ultra-running community! Runners are allowed to camp at the park from start to finish […]
Grand Traverse Mountain Run
The Grand Traverse Mountain Run is a point-to-point ultra marathon from Crested Butte to Aspen, Colorado. The course follows the route of the Grand Traverse Backcountry Ski race. In total, runners travel 40 miles across the Elk Mountains with over 6,000′ of elevation gain.
The Beaver Run
The Beaver Run is a high-altitude mountain running event held Labor Day Weekend in beautiful Breckenridge, Colorado. Participants can choose from 5K and 10K distances along Breckenridge's scenic paved recreation path system while enjoying mountain views, fresh alpine air, and a festive holiday weekend atmosphere at approximately 9,600 feet above sea level. Hosted by BA […]
Recovery Run of the Rockies 5K
Join us for the 4th Annual Recovery Run of the Rockies 5K on Saturday, September 5, 2026, at Fossil Creek Park in Fort Collins, Colorado! This professionally timed 5K brings runners, walkers, families, and community members together for an energizing morning celebrating recovery, health, and hope. Whether you are racing for a personal best, enjoying […]
PPRR Nielson Challenge
North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United StatesRace Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]
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