Event details subject to change. Please confirm all information via event website.
Events for September 13, 2026
Horsetooth Open Water Swim
Swim a 10K, 2.4 miles, 1.2 miles, 1000 meters, or 250 meters in the Horsetooth Reservoir. The Horsetooth Open Water Swims incorporated as an independent 501(c)3 not-for-profit organization. Our current […]
Lead King Loop
Join us for a great day of running through the spectacular fall colors in the heart of the Elk Mountain Range. Run, walk, or hike the 25k loop around Lead King […]
Tri the Rock Kids Tri
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, […]
Nun Run Half Marathon
Do you support life at all stages from conception until natural death? Do you believe every human being should be treated with the utmost dignity and the respect they deserve? […]
RMRR 5K/10K
Riverwalk Ballfields 9830 Riverdale Rd, ThorntonEveryone – 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 […]
El Grito 5K
The 31st El Grito 5k run & walk will start at 9:00 am on the MSU Auraria Campus, 900 Auraria Parkway, Denver, CO 80204. Race fee is $30/$35 on race […]
Honey Bee Hustle
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 […]
Tiger Prowl 5K
The Tiger Prowl 5K is a fabulous annual community event and tradition run by the Lakewood High School Foundation to support all the talented and ambitious student programs offered. All […]
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