Running races in Colorado — Page 3
Upcoming running races in Colorado. We show what's actually known about each one and mark the rest as unknown.
Race results
Showing 121–180 of 274 races. Use search and filters from page 1.
Sep 27, 2026 · 7:00 AM · Boulder, CO
Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado
- Price
- $526
Sep 27, 2026 · 3:00 PM · La Junta, CO
Healthy Kids Running Series Fall 2026 - La Junta, CO
- Price
- $6.30
Oct 2, 2026 · 12:01 AM · Anywhere, CO
Water For People World Water Classic
- Price
- Price on registration site
Oct 3, 2026 · 8:00 AM · Littleton, CO
HRCA Wildcat Mountain Trail Races
- Price
- $10-$60
Oct 3, 2026 · 8:30 AM · Canon City, CO
Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon
- Price
- Free-$85.80
- Field size
- 623 · based on the organizer's entry cap
Oct 3, 2026 · 8:00 AM · Fort Collins, CO
Homecoming 5K - Colorado State University
- Price
- $28.38-$39.03
Oct 3, 2026 · 9:00 AM · Steamboat Springs, CO
Emerald Mountain Trail Run
- Price
- $28.30-$44.20
- Field size
- 300 · based on the organizer's entry cap
Oct 3, 2026 · 7:00 AM · Colorado Springs, CO
Colorado Springs Marathon, Half, 5K, and Kids K
- Price
- Free-$129.70
- Field size
- 20 · based on the organizer's entry cap
Oct 4, 2026 · 10:00 AM · Denver, CO
Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation
- Price
- Free-$38.35
Oct 4, 2026 · 9:00 AM · Aspen, CO
Rubey Rescue Run
- Price
- $65
- Field size
- 150 · based on the organizer's entry cap
Oct 4, 2026 · 11:30 AM · Colorado Springs, CO
Kids' Fall Series - Where Kids Run Free!
- Price
- Free
Oct 4, 2026 · 7:00 AM · Windsor, CO
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run
- Price
- $20-$140
Oct 10, 2026 · 8:00 AM · Breckenridge, CO
Breckenridge RunFest
- Price
- $30.25-$130.95
Oct 10, 2026 · 7:30 AM · Centennial, CO
Bagel Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$48.70
Oct 10, 2026 · 7:30 AM · Centennial, CO
Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$48.70
Oct 10, 2026 · 7:30 AM · Fort Collins, CO
The Long View Marathon
- Price
- $38.10-$117.60
- Field size
- 1,000 · based on the organizer's entry cap
Oct 10, 2026 · 7:30 AM · Pine, CO
Suffer Better 10th Annual Fall Trail Runs
- Price
- $27.50-$96.40
- Field size
- 198 · based on the organizer's entry cap
Oct 11, 2026 · 8:30 AM · Littleton, CO
Your Story Isn't Over 5k/10k/Kids 1-Mile
- Price
- $22.45-$38.35
- Field size
- 300 · based on the organizer's entry cap
Oct 17, 2026 · 7:00 AM · Fort Collins, CO
Blue Sky Trail Marathon & Half Marathon
- Price
- $117.60-$138.80
- Field size
- 300 · based on the organizer's entry cap
Oct 17, 2026 · 9:00 AM · Lakewood, CO
The Great Trailhead Foot Race 5 & 10 Miler
- Price
- $65-$70
- Field size
- 375 · based on the organizer's entry cap
Oct 18, 2026 · 8:00 AM · Colorado Springs, CO
Running Scared 5K/13K - Colorado Springs
- Price
- $33.60-$59.90
Oct 24, 2026 · 9:00 AM · Arvada, CO
Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP Fitness
- Price
- $10-$35
- Field size
- 350 · based on the organizer's entry cap
Oct 24, 2026 · 8:00 AM · Mancos, CO
Mancos Cowboy Half Marathon, 5K, and Fun Run
- Price
- Free-$80.50
Oct 24, 2026 · 10:30 AM · Palmer Lake, CO
YMCA Creepy Crawl 5K presented by Corwin Honda
- Price
- Free-$43.65
Oct 31, 2026 · 10:00 AM · Idaho Springs, CO
Halloween Fun Run 5k & 1mile - Zombie Theme
- Price
- $27.50
Oct 31, 2026 · 8:00 AM · Colorado Springs, CO
Spooky Sprint - Colorado Springs
- Price
- $20.83-$61.22
Oct 31, 2026 · 7:30 AM · Centennial, CO
PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$48.70
Oct 31, 2026 · 7:30 AM · Centennial, CO
Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$48.70
Oct 31, 2026 · 9:00 AM · Steamboat Springs, CO
Foundry Halloween 5k
- Price
- $28.55
- Field size
- 150 · based on the organizer's entry cap