5Ks in Colorado
Every upcoming 5K race we know about in Colorado. Where a detail isn't confirmed, we mark it unknown rather than guessing.
Race results
Showing 60+ of 202 races · loading the full list…
Sat, Sep 26, 2026 · 8:30 AM · Fruita, CO
Mesa County Search & Rescue 5K
- Price
- $38.10
- Field size
- 250 · based on the organizer's entry cap
Sat, Sep 26, 2026 · 10:00 AM · Pagosa Springs, CO
Pagosa Mountain Chile Cha Cha Trail Races
- Price
- $32.80
Sat, Sep 26, 2026 · 7:30 AM · Centennial, CO
Oktoberfest Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$54
Sat, Sep 26, 2026 · 7:30 AM · Centennial, CO
Run for Donuts 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$54
Sat, Sep 26, 2026 · 8:05 AM · Parker, CO
Parker Parks and Recreation So Long to Summer 5K/10K
- Price
- $48.95-$59.55
- Field size
- 700 · based on the organizer's entry cap
Sun, Sep 27, 2026 · 9:00 AM · Arvada, CO
WWE ANNUAL RUN WITH THE WOLVES
- Price
- $44
Sun, 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
Sat, 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-$96.40
- Field size
- 623 · based on the organizer's entry cap
Sat, Oct 3, 2026 · 8:00 AM · Fort Collins, CO
Homecoming 5K at Colorado State University
- Price
- $28.38-$50.74
Sat, Oct 3, 2026 · 8:00 AM · Littleton, CO
Spooky Sprint - Denver
- Price
- Free-$87.72
Sat, Oct 3, 2026 · 4:00 PM · Denver, CO
Rainbow Trail Lutheran Camp's 20th Annual Grace Race 5k
- Price
- $40
Sat, Oct 3, 2026 · 7:00 AM · Colorado Springs, CO
Colorado Springs Marathon, Half, 5K, and Kids K
- Price
- Free-$140.38
- Field size
- 20 · based on the organizer's entry cap
Sun, Oct 4, 2026 · 10:00 AM · Denver, CO
Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation
- Price
- Free-$38.35
Sun, Oct 4, 2026 · 7:00 AM · Windsor, CO
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run
- Price
- $20-$140
Sat, Oct 10, 2026 · 8:00 AM · Breckenridge, CO
Breckenridge RunFest
- Price
- Free-$141.55
Sat, Oct 10, 2026 · 9:00 AM · Windsor, CO
Footsteps for Families 5k Fun Run & Concert
- Price
- $22.20-$32.80
Sat, Oct 10, 2026 · 7:30 AM · Centennial, CO
Cookie Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$48.70
Sat, Oct 10, 2026 · 7:30 AM · Centennial, CO
Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA
- Price
- $32.80-$48.70
Sat, Oct 10, 2026 · 7:30 AM · Fort Collins, CO
The Long View Marathon
- Price
- $48.70-$128.20
- Field size
- 1,000 · based on the organizer's entry cap
Sat, Oct 10, 2026 · 7:30 AM · Pine, CO
Suffer Better 10th Annual Fall Trail Runs
- Price
- $27.50-$117.60
- Field size
- 198 · based on the organizer's entry cap
Sun, Oct 11, 2026 · 8:30 AM · Littleton, CO
Your Story Isn't Over 5k/10k/Kids 1-Mile
- Price
- $27.75-$48.95
- Field size
- 300 · based on the organizer's entry cap
Sat, Oct 17, 2026 · 8:30 AM · Longmont, CO
Longmonster Dash 5k
- Price
- $44.20
Sun, Oct 18, 2026 · 8:00 AM · Colorado Springs, CO
Running Scared 5K/13K - Colorado Springs
- Price
- $33.60-$59.90
Sun, Oct 18, 2026 · 10:30 AM · Palmer Lake, CO
The Palmer Lake .5K (Yes "Point" 5)
- Price
- $16.90-$38.10
Sat, 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