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RUNNING RACES IN CO

Race Distance(s)
Race Date
City
Race Start End
OUTLAST DENVER Littleton, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Lafayette Music Fest -5K - 10K Lafayette, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Ethiopians 5K Aurora, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Ethiorado 5K Run/Walk Aurora, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Family Soccer 5k run Aurora, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
18th Annual Cedaredge Applefest 5k Run and Fitness wal Cedaredge, CO Oct. 3, '26 Oct. 4, '26 read more  
Spooky Sprint - Denver Littleton, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
PRA Miner Gold Rush Broomfield, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Splashland Triathlon Alamosa, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Rainbow Trail Lutheran Camp's 20th Annual Grace Race 5k Denver, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Mustang Music 5K Fort Collins, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
I Can 5k Thornton, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Homecoming 5K at Colorado State University Fort Collins, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
FAMpoint5k Grand Junction, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon Canon City, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Nielson Challenge Colorado Springs, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Big Waves Family Superhero 5K run/walk Westminster, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Colorado Springs Marathon, Half, 5K, and Kids K Colorado Springs, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Emerald Mountain Trail Run Steamboat Springs, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
HRCA Wildcat Mountain Trail Races Littleton, CO Oct. 3, '26 Oct. 3, '26 read more REGISTER
Kids' Fall Series - Where Kids Run Free! Colorado Springs, CO Oct. 4, '26 Nov. 15, '26 read more REGISTER
Fall Series - Get Dirty! Get Muddy! Colorado Springs, CO Oct. 4, '26 Nov. 15, '26 read more REGISTER
OTILLO Swimrun Colorado Fort Collins, CO Oct. 4, '26 Oct. 4, '26 read more REGISTER
Strides for Sierra 5K run/walk Arvada, CO Oct. 4, '26 Oct. 4, '26 read more REGISTER
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run Windsor, CO Oct. 4, '26 Oct. 4, '26 read more REGISTER
Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation Denver, CO Oct. 4, '26 Oct. 4, '26 read more REGISTER
Rubey Rescue Run Aspen, CO Oct. 4, '26 Oct. 4, '26 read more REGISTER
RMRR October 5k/8mi Aurora, CO Oct. 4, '26 Oct. 4, '26 read more REGISTER
Mini Tri w training Fort Lupton, CO Oct. 5, '26 Oct. 30, '26 read more  
ASDAsh 5K to Beat Tooth Decay Aurora, CO Oct. 10, '26 Oct. 10, '26 read more REGISTER