Tri the Rock Kids Tri

Butterfield Park 3952 Butterfield Crossing Drive, Castle Rock, CO, United States

We welcome you to our 17th annual youth triathlon! Tri the Rock is designed for, and open to youth ages 5 to 18. Come for a great day of fun, food, prizes and sport! Age division participants for Tri the Rock compete based on age on RACE DAY. Be sure to register and prepare accordingly. Race […]

Event Series RMRR Trophy Series

RMRR 5K/10K

Riverwalk Ballfields 9830 Riverdale Rd, Thornton, CO, United States

Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great goal to shoot for whatever your speed.  Just show up an hour before the start and we’ll get you ready for your race.  It’s an […]

Denver Rocks Run 5K/10K

City Park - Denver 1700 N York St, Denver, CO, United States

We all know Denver is known for its world-class cultural attractions, thriving craft breweries, and red-hot music scene. Be part of the first 5K/10K running event of its kind with this rock n' roll infused run that kicks off at Civic Center Park in downtown Denver on November 6, 2021.

$45

9/11 Heroes Run

Great Lawn Park 101 Yosemite St, Denver, CO, United States

The 9/11 Heroes Run is a 5k race honoring our heroes: those lost on September 11th and in the wars since, as well as the veterans, active duty, first responders, inspired civilians and families of the fallen that support them. This race benefits the Travis Manion Foundation which empowers veterans and families of fallen heroes […]

Honey Bee Hustle

Fairgrounds Park 700 S Railroad Ave, Loveland, CO, United States

Are you ready to challenge yourself? We will have a 1-mile loop open for 1 ½ hrs. Who can run the most loops in 1 ½ hrs? Who can run the fastest? We will have awards for different categories. Come challenge yourself at the Honey Festival while running the Honey Bee Challenge! There will be […]

Arapahoe County 5K Trail Run

17 Mile Horse Farm Park 8181 S. Parker Rd, Centennial, CO, United States

Lace up your sneaks for a timed 5K race beginning at Tagawa Gardens and running along the Cherry Creek Regional Trail. Walkers and all ages welcome! Funds support trail maintenance and Arapahoe County Open Spaces. BBQ and live bluegrass at the finish line!  

Run Rabbit Run Ultra

Steamboat Springs Ski Resort 2305 Mt Werner Cir, Steamboat Springs, CO, United States

The Run Rabbit Run courses are very much like life, in that there are many, many little and not so little ups and downs in between the obvious highs and lows. Be prepared. The 50 mile race starts bright and early at 6 AM at the Steamboat Springs ski area (elevation, 6,900 feet) on Saturday, […]

CMRA South Seven

Bluffs Regional Park 10099 Crooked Stick Pl, Lone Tree, CO, United States

The course will be on wide, crushed gravel paths and, depending on the status of construction in the nearby neighborhood, potentially a little bit of single track. It's a hilly, but very run-able course, a few ups and downs during this 7 mile course! We'll travel "the wrong way" around the standard Bluffs route before […]

Rocky Mountain Lab Rescue 5K

Great Lawn Park 101 Yosemite St, Denver, CO, United States

The Rocky Mountain Lab Rescue Fun Run is our biggest fundraising event of the year and all of the proceeds go directly to helping our awesome dogs! We will host an in-person run and walk as well as a virtual option to expand our outreach throughout the country. Our vendor expo and marketplace promises to […]

All-Out Fallfest

Church Ranch Office Park 10170 Church Ranch Wy, Westminster, CO, United States

One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest 5K, 10K and half marathon! As the courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view. A course that's not too hilly & […]

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