May 09, 2026
Join the festivities at our HRCA Mother’s Day 5K at Cresthill Middle School in Highlands Ranch on Saturday, May 9, 202...
May 09, 2026
Like Running or Walking? Love Wine? This race is for you!Join us on Saturday, May 9, 2026 at 9:30am and 11:30am (you w...
May 09, 2026
Colorado at its Best – the Carbon Valley Half Marathon showcases the beauty & diversity of Colorado’s best kept ...
May 03, 2026
Longmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers...
May 03, 2026
Welcome to the Colorado Marathon, one of the most stunning races in the country! This annual marathon is held in the ver...
May 03, 2026
Welcome to the Colorado Marathon, one of the most stunning races in the country! This annual marathon is held in the ver...
May 03, 2026
Welcome to the Colorado Marathon, one of the most stunning races in the country! This annual marathon is held in the ver...
May 03, 2026
Welcome to the Colorado Marathon, one of the most stunning races in the country! This annual marathon is held in the ver...
May 02, 2026
Who can turn down a morning in Garden of the Gods? We'll close the park to traffic, so runners can enjoy their race, tra...
May 02, 2026
Each season comes to an end with a celebratory 5K. This closing event gives program participants of all abilities a tang...
May 02, 2026
The DUCK WADDLE 5K race begins at east side of Estes Park Parking Structure. Each runner and walker will follow the scen...
Apr 26, 2026
Ready to gallop around Denver with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k at Great ...
Apr 26, 2026
The American Driving Academy and the Southern Colorado Runners welcome you to the 48th Annual Spring Runoff Sunday, Apri...
Apr 25, 2026
Prepare for some fun in Cañon City! Enjoy scenic views along the rim of the Royal Gorge, 900 feet above the Arkansas Ri...
Apr 25, 2026
A road half marathon & 5k in beautiful Estes Park, finishing downtown amidst the infamous Bigfoot Days Festival. Thi...
Apr 25, 2026
A road half marathon & 5k in beautiful Estes Park, finishing downtown amidst the infamous Bigfoot Days Festival. Thi...
Apr 19, 2026
Welcome to the 53rd running of the Horsetooth Half Marathon, presented by Fort Collins Connexion. Your race will take yo...
Apr 18, 2026
Woody’s Tortoise and Hare is a true handicap event in that it measures your fitness level based on your age, gender, h...
Apr 18, 2026
Rattler was designed to showcase the stunning trails of Palmer Park, one of Colorado Springs' top city parks. Runners wi...
Apr 18, 2026
Unleash your inner superhero at the 14th Annual Beat the Heat event! This year, we're calling all champions to assemble ...
Apr 12, 2026
Welcome to the SPRING FLING Prairie Dog Half, part of the Prairie Dog Half Race Series. This spring-time event also feat...
Apr 12, 2026
Welcome to the Platte River Half Marathon & Relay race, one of the most exciting and popular races in Denver, Colora...
Apr 12, 2026
We are excited to be partnering with the D51 Foundation. They are a great addition that will help us promote and grow th...