Colorado Race Calendar — All Events

(As of Monday, October 13, 2025) Print Version Print

For event listing corrections, please contact us.

Date	Event	Location
Sat., 10/18/25	Blue Sky Marathon & Half Run Register	Horsetooth Mountain Park Fort Collins, CO
Sat., 10/18/25 7:00 AM	Blue Sky Marathon & Half Marathon (26.7 Mile) Run, Half Marathon (13.3 Mile) Run Register	Blue Sky Trailhead Fort Collins, CO
Sat., 10/18/25 9:00 AM	The Great Trailhead Footrace 10 Mile Run, 5 Mile Run Register	Bear Creek Lake Park - Pelican Picnic Shelters Lakewood, CO
Sun., 10/26/25 8:30 AM	Narrowleaf Lake Run 15K Run, 10K Run, 5K Run	Boyd Lake State Park Loveland, CO
Sat., 11/1/25 9:00 AM	City Park 5k & 1 Mile Walk of Hope for Pancreatic Cancer Research 5K Run, 1 Mile Run Register	City Park Denver, CO
Sat., 11/1/25 8:00 AM	Colorado 24 Hour Run 24 Hour Run, 12 Hour Run, 6 Hour Run, Relay (24, 12, 6 hour) Run Register	Colorado Youth Outdoors Fort Collins, CO
Sat., 11/1/25	Colorado 24 Hour Run Run Register	Colorado Youth Outdoors Fort Collins, CO
Sun., 11/2/25 9:00 AM	All-Out Kooky-Spooky Half Marathon Run, 10K Run, 5K Run Register	JeffCo NAAC Stadium Golden, CO
Sat., 11/8/25	Panda Waddle 5k Run Register	Longs Family Park Grand Junction, CO
Sun., 11/9/25 7:00 AM	Mountain Madness Fall Frenzy Orienteering Trail Race 3 Hour Ultra/Trail, 5 Hour Ultra/Trail Register	Golden Gate Canyon State Park - Red Barn Golden, CO
Sat., 11/22/25 8:30 AM	10k Turkey Trek & 5k Turkey Trot and Half Marathon Half Turkey Run, 10K Run, 5K Run Register	Long Lake Regional Park Arvada, CO
Thu., 11/27/25 9:00 AM	Louisville Turkey Trot 5K 5K Run Register	Louisville, CO
Thu., 11/27/25 9:00 AM	Pelican Lakes Turkey Trot 5K Run, 5K Walk Register	Pelican Lakes Resort & Golf Windsor, CO
Sat., 12/6/25	Race of the Santas Run Register	Breckenridge, 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., 12/20/25 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 7:15 AM	Rock 'n' Roll Arizona Half Marathon Run, 10K Run Event Details Register Website Results	Tempe Beach Park Tempe, AZ Course Map
Sat., 2/14/26 10:00 AM	Heart Throb 5k 5K Run Register	Johnny Roberts Memorial Park 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., 4/12/26 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., 5/10/26 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

Want to know your pace? Check out our Pace Calculator.

>> Return to top of page

Visit our partners: Raceplace Events, Runner's Den, Southern Arizona Roadrunners