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Colorado Race Calendar — All Events

(As of Wednesday, December 03, 2025) Print Version  For event listing corrections, please contact us.

Date	Event	Location
Sat., 12/6/25	Race of the Santas Run Register	Breckenridge, CO
Sat., 12/6/25	Run with the Buffalo Fun Run: 2.5 Mile Run Register	Commerce City, CO
Sat., 12/6/25	Run with the Buffalo Fun Run: 5K Run Register	Commerce City, CO
Sat., 12/13/25 8:00 AM	Santa Catch 5k and 10k 5K Run, 10K Run, Kid's Fun Run Register	NOCO Sports Center Windsor, CO
Sat., 12/13/25 6:00 AM	Yeti Set Go! 5K Fun Run 5K Fun Run/Walk	Arapahoe County Fairgrounds and Event Center Aurora, CO
Sat., 12/20/25 10:00 AM	Santa's Dash for Ca$h 5K Run Register	Sloan Lake Park Denver, CO
Wed., 12/31/25	Resolution Run 5K Run Register	Edora Pool Ice Center Fort Collins, CO
Wed., 12/31/25 6:00 PM	Resolution Run 5K 5K Run Register	Edora Pool Ice Center (EPIC) Fort Collins, CO
Thu., 1/1/26 10:00 AM	Resolute Runner 5k 5K Run Register	Johnny Roberts Memorial Park Arvada, CO
Sat., 1/17/26 8:00 AM	Rock 'n' Roll Arizona 5K Run Event Details Register Website Results	Tempe Beach Park Tempe, AZ Course Map
Sun., 1/18/26 8:00 AM	Colorado Cold Rush 5k/10k 10K Run, 5K Run Register	Coal Creek Golf Course Louisville, CO
Sun., 1/18/26 7:00 AM	Rock 'n' Roll Arizona Half Marathon Run, 10K Run Event Details Register Website Results	Tempe Beach Park Tempe, AZ Course Map
Sat., 1/24/26 8:30 AM	Chilly Willy 5K/10K/Half Marathon – Colorado Springs 5K Run, 10K Run, Half Marathon Run Register	Cottonwood Creek Park Colorado Springs, CO
Sun., 1/25/26 10:00 AM	Yeti Chase 5k/10k 5K Run, 10K Run Register	Bear Creek Lake Park Morrison, CO
Sat., 2/14/26 10:00 AM	Heart Throb 5k 5K Run Register	Johnny Roberts Memorial Park Arvada, CO
Sun., 2/15/26 9:00 AM	Ralston Creek Half Marathon & 5k 5K Run, Half Marathon Run Register	Sartorious Arvada, CO
Sat., 2/21/26 10:00 AM	Chilly Cheeks Winter Duathlon 2.5 mi run/11.8 mi bike/2.5 mi run Duathlon, Relay Teams of 2 Duathlon Register	Cherry Creek State Park Englewood, CO
Sun., 2/22/26 10:00 AM	Highlands Ranch 5k 5K Run Register	Highlands Heritage Regional Park Highlands Ranch, CO
Sat., 3/14/26 9:30 AM	Erin Go Braugh 7.77k 7.77K Run Register	Westminster Promenade Terrace Westminster, CO
Sun., 3/22/26 9:00 AM	All-Out Spring Fever Half Marathon Run, 10K Run, 5K Run Register	JeffCo NAAC Stadium Golden, CO
Sun., 3/22/26 9:00 AM	Central Park 5k 5K Run Register	Central Park Neighborhood Denver, CO
Sun., 4/5/26 8:00 AM	Three Creeks Half Marathon Half Marathon Run, Relay Teams of 2 Run Register	Cherry Creek State Park Englewood, CO
Sun., 4/12/26 8:00 AM	Spring Fling Prairie Dog Half, 10k & 5k Half Marathon Run, 10K Run, 5K Run Register	Apex Center Arvada, CO
Sun., 4/26/26 9:00 AM	Unicorn 5k (Denver – East) 5K Run Register	Great Lawn Park Denver, CO
Sat., 5/9/26 9:30 AM	Colterris Wine Run 5k 5K Run Register	Colterris Winery Palisade, CO
Sun., 5/10/26 8:00 AM	Colorado Women's Classic 10 Mile Run, 5K Run, 10K Run Register	Westminster Promenade Terrace Westminster, CO
Sun., 6/7/26 6:30 AM	Colorado 13er Half Marathon Run, 10K Run, 5K Run Register	Home Depot Louisville, CO
Sat., 6/20/26 8:00 AM	Unicorn 5k (North) 5K Run Register	Carpenter Park Fields Thornton, CO
Sun., 6/28/26 5:30 AM	Mt Blue Sky Ascent & RoundTrip (formerly Mt Evans Ascent) Ascent: 14.5 Mile Run, Round Trip: 29 Mile Run Register	Mount Blue Sky Idaho Springs, CO
Sat., 10/3/26 7:00 AM	Colorado Springs Marathon Marathon Run, Half Marathon Run, 5K Run, Kids K Fun Run/Walk Register	Colorado Springs Pioneers Museum Colorado Springs, CO
Sun., 10/4/26 7:00 AM	SKECHERS Hot Chocolate Run - Denver 5K Run	Washington Park Denver, CO