Colorado Race Calendar — Running Events
(As of Monday, December 15, 2025) Print Version
For event listing corrections, please contact us.
For event listing corrections, please contact us.| Date | Event | Location |
| 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 |
| 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 |
| Sun., 5/3/26 7:30 AM | Longmont Half Marathon & 5k Half Marathon Run, 5K Run Register | Longmont Rec Center Longmont, 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., 6/21/26 7:30 AM | Father's Day Classic 10k, 5k & 1 Mile 10K Run, 5K Run, 1 Mile Run Register | Apex Recreation Center Arvada, 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., 7/4/26 8:00 AM | Let Freedom Run 5k – Longmont 5K Run Register | Sandstone Ranch Park Longmont, CO |
| Sat., 7/4/26 7:30 AM | Let Freedom Run 5k/10k – Louisville 10K Run, 5K Run Register | Louisville Recreation Center Louisville, CO |
| Sat., 7/18/26 6:30 AM | Summer Splash Prairie Dog Half Marathon, 10k & 5k Half Marathon Run, 10K Run, 5K Run Register | Castle View High School Castle Rock, CO |
| Sat., 8/1/26 8:00 AM | Unicorn 5k (South) 5K Run Register | Highlands Heritage Regional Park Highlands Ranch, 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 |
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