Events Tarleton State University’s Fort Worth Family Fun Run Fort Worth, TX 16th Annual Parkland Pace or Race Tacoma, WA Emerald Coast Mud Run Defuniak Springs, FL Event Series Ironman Triathlon Rock 'n' Roll Marathon Spartan Race Hot Chocolate Run Ragnar Relay
Tarleton State University’s Fort Worth Family Fun Run Fort Worth, TX 16th Annual Parkland Pace or Race Tacoma, WA Emerald Coast Mud Run Defuniak Springs, FL
April 2025 Bigfoot Half Marathon Estes Park, CO Sat - Apr 26, 2025 Running > 5k, Half Marathon Unicorn 5k (Denver-East) Denver, CO Sun - Apr 27, 2025 @ 9:00 AM Running > 1k, 5k May 2025 Greenland Trail Races Larkspur, CO Sat - May 03, 2025 @ 7:00 AM Running > Trail, 5k MayFest Fun Run Parachute, CO Sat - May 03, 2025 Running > 5k Cinco De Mayo Run: Against All Odds DENVER/AURORA Aurora, CO Sat - May 03, 2025 Running > 10k 21st Annual Bob Turner Classic 5k Run/Walk Berthoud, CO May 3, 2025 - May 4, 2025 Running > 5k Sloth Runners Race 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - May 03, 2025 Running > 5k, 10k, Half Marathon, 1 mile Water Wells for Africa 5k Walk/Run Silt, CO Sun - May 04, 2025 Running > 5k The Colorado Marathon Fort Collins, CO Sun - May 04, 2025 Running > Marathon Longmont Half Marathon & 5k Longmont, CO Sun - May 04, 2025 @ 7:30 AM Running > 5k, Half Marathon Muddy Dash | Denver Erie, CO May 10, 2025 - May 11, 2025 Running > 5k 2025 Wicked Wine Run Denver Brighton, CO May 10, 2025 - May 11, 2025 Running > 5k, 1k Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek Parker, CO Sat - May 10, 2025 Running > 5k, 1 mile Colterris Wine Run 5k Palisade, CO Sat - May 10, 2025 Running > 5k Colorado Women's Classic Westminster, CO Sun - May 11, 2025 @ 8:00 AM Running > 10k, 10 Mile, 5k Stride for Wellness Colorado Springs, CO Sun - May 18, 2025 Running > 5k Rifle Western 5K Rifle, CO May 31, 2025 - Jun 1, 2025 Running > 5k June 2025 Cherry Creek Race for the Watershed 2025 Aurora, CO Sat - Jun 14, 2025 Running > 5k Summits Trail Runs Granby, CO Jun 14, 2025 - Jun 15, 2025 Running > 5k Father's Day Fun Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Jun 14, 2025 Running > 10k Sam's Rainbow Run Fort Collins, CO Sat - Jun 14, 2025 Running > 5k, 1 mile Run for Donuts 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Jun 14, 2025 Running > 10k Footsteps for Families 5k Fun Run & Concert Windsor, CO Fri - Jun 20, 2025 Running > 5k New Year Challenge – Year of the Snake 2.025 Mile 20.25 Mile 202.5 MILE Denver, CO Jun 21, 2025 - Jun 28, 2025 (8:00 AM) Running > 5k, 10k, 1 mile, Half Marathon Bubble Run | Denver Commerce City, CO Jun 21, 2025 - Jun 22, 2025 Running > 5k Red, White, and Brew - 5k, 10k, 1/2 Marathon, 12 Hour "Last Person Standing" - Windsor (June 21, 2025) Windsor, CO Sat - Jun 21, 2025 @ 7:00 AM Running > 5k, 10k, Half Marathon Colorado Springs: Walk With Autism and Resource Fair Colorado Springs, CO Sat - Jun 21, 2025 Running > 5k 5K To Fight Histio Colorado Springs, CO Sun - Jun 22, 2025 Running > 5k Healing Warriors 4th Annual 5K Fun Run Fort Collins, CO Sun - Jun 22, 2025 Running > 5k 13th Annual Buffs4Life 5k Walk/Run Boulder, CO Jun 22, 2025 - Jun 23, 2025 Running > 5k 1 2 3 › » Add your event to the calendar Trending Events Tarleton State University’s Fort Worth Family Fun Run 16th Annual Parkland Pace or Race Emerald Coast Mud Run
Sloth Runners Race 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - May 03, 2025 Running > 5k, 10k, Half Marathon, 1 mile
Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek Parker, CO Sat - May 10, 2025 Running > 5k, 1 mile
New Year Challenge – Year of the Snake 2.025 Mile 20.25 Mile 202.5 MILE Denver, CO Jun 21, 2025 - Jun 28, 2025 (8:00 AM) Running > 5k, 10k, 1 mile, Half Marathon
Red, White, and Brew - 5k, 10k, 1/2 Marathon, 12 Hour "Last Person Standing" - Windsor (June 21, 2025) Windsor, CO Sat - Jun 21, 2025 @ 7:00 AM Running > 5k, 10k, Half Marathon
Colorado Springs: Walk With Autism and Resource Fair Colorado Springs, CO Sat - Jun 21, 2025 Running > 5k