Event details subject to change. Please confirm all information via event website.
RMRR Platte River Trailhead Park 5K/10K
Platte River Trailhead Park Colorado Blvd and E 88th Ave, ThorntonWeek of Events
RMRR Platte River Trailhead Park 5K/10K
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 […]
COPS 5K
The Colorado Outdoor Pace Series ("C.O.P.S.") is a unique set of races presented by Golden Mountain Runners and Golden Endurance. Race Dates January 7, 2026 - 5K January 21, 2026 - 45 Minute Timed Race February 4, 2026 - 10K February 18, 2026 - 60 Minute Timed Race March 4, 2026 - 15K March 18, […]
All-Out Polar Prowl
From the heart of the West Metro area and the Stenger Soccer Complex, All-Out brings you Polar Prowl! Along with its Endless Series sidekick in June… Summer Breeze, these 5K, 10K and Half Marathon courses will follow Van Bibber Creek Trail west through Arvada's open spaces with spectacular views of the countryside and Table Mountain. Plus… all distances […]
Sentinel Flurry 5K
The Sentinel Flurry returns for the 2025-2026 School year! It will take place on January 10th, 2026. Participants can sign up for the 1 mile, 5K or the Combo. Combo participants will run both the 5K and the 1 Mile.
CMRA Frozen Platte 8K
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 […]
PPRR Winter Series I
The series consists of four progressively longer (LONG AND SHORT) races. Please note: You must choose your distance when registering. The Long Race starts at 10:00AM. Short Race starts at 10:20AM. The courses are gravel/paved roads, packed double-track, and some single-track trails, which may or may not be snow-packed, icy, muddy, rocky, slushy, uphill and/or downhill. Altitude […]
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