Events Unicorn 5k (North) Thornton, CO Erie Erie, CO CEROX + IRON Frederick, CO Event Series Ironman Triathlon Rock 'n' Roll Marathon Spartan Race Hot Chocolate Run Ragnar Relay
October 2026 PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Oct 31, 2026 Running > 5k, 10k, Half Marathon, 1 mile I Ain't Scared (of 5k) Thornton, CO Sat - Oct 31, 2026 Running > 5k November 2026 Run for Mental Health 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Nov 14, 2026 Running > 5k, 10k, Half Marathon, 1 mile Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Nov 28, 2026 Running > 5k, 10k, Half Marathon, 1 mile December 2026 run.Windsor Gift Cards Windsor, CO Thu - Dec 31, 2026 Running « ‹ 1 2 3 Add your event to the calendar Trending Events Unicorn 5k (North) Erie CEROX + IRON
PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Oct 31, 2026 Running > 5k, 10k, Half Marathon, 1 mile
Run for Mental Health 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Nov 14, 2026 Running > 5k, 10k, Half Marathon, 1 mile
Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Sat - Nov 28, 2026 Running > 5k, 10k, Half Marathon, 1 mile
