PPRR Nielson Challenge

North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

Race 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 […]

PPRR Nielson Challenge

North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

Race 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 […]

RMRR Platte River Trailhead Park 5K/10K

Platte River Trailhead Park Colorado Blvd and E 88th Ave, Thornton, CO, United States

Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great goal to shoot for whatever your speed.  Just show up an hour before the start and we’ll get you ready for your race.  It’s an […]

Sourdough Snowshoe Race

South Sourdough Trailhead 115 Co Rd 116, Nederland, CO, United States

The race is intended to be a difficult and fun free of charge backcountry event; any and all plans can change due to trail conditions for the runner’s safety.  Snowshoes will be required unless the race director chooses to change the requirements due to trail conditions.  All racers are required to carry 20 ounces of […]

Canceled Chilly Cheeks Winter Duathlon and 4 Mile

Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United States

Due to a road reconstruction project in Cherry Creek State Park, the Chilly Cheeks series will be limited to a single event in 2024, held on 2/24/2024. The road was wiped-out during a May flood, essentially splitting the park into two halves for the entire summer season. The road construction has begun, and will be […]

Event Series Front Range Freeze

Polar Bear 5K

Horsetooth Reservoir 4200 W County Road 38 E, Fort Collins, CO, United States

Enjoy a beautiful run around the Horsetooth Reservoir with views of the Fort Collins Foothills. After your run, show how brave you are & take the dive into the icy reservoir water! Enjoy the after party with craft beer, overall and age group awards for the 5k, and local vendors!

CMRA Frozen Platte 8K

Platte River Bar & Grill 5995 S Santa Fe Dr, Littleton, CO, United States

The course will go north from there on the S. Platte trail, across the suspension bridge at the Big Dry Creek Trail, back south on the west side of the river, across the bridge near the Platt River Bar and Grill, south past the finish line, around the Lee Gulch roundabout, and back north to […]

Raptor Resolution Run

Wildlife Discovery Center - River Campus 5200 Nature Center Rd, Pueblo, CO, United States

Join the Nature & Wildlife Discovery Center and the Southern Colorado Runners in celebrating 12 years of this wonderful event with our FINAL Raptor Resolution Run! The race will take place at 10:00 AM on Saturday, January 20, 2024 at the NWDC River Campus, 5200 Nature Center Road, Pueblo, CO 81003. All proceeds support our efforts to rehabilitate […]

Rio Frio 5K

Cole Park 300 Hunt Ave, Alamosa, CO, United States

The Annual Rio Frio 5K on Ice is one of America’s most unique 5k races! This spectacular event is conducted entirely on the majestic frozen Rio Grande! Have you ever run on a frozen river? Come and try it out on January 29th in Alamosa.

$25

Postponed Mile High Stair Climb

Republic Plaza 370 17th St., Denver, CO, United States

Continuing the legacy of the Run the Republic and the Fight for Air Climb, the Mile High Stair Climb is a world-class tower running event benefiting the American Lung Association brought to you by HAL Sports. The climb is held at Denver's tallest building, the Republic Plaza, standing at 714 feet tall. Combine that with […]

$50 – $75

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