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11
Rubey Rescue Run
Sun, Oct 11, 2026Aspen, United States
17
Indian Creek Trail Runs
Sat, Oct 17, 2026Sedalia, United States
17
Haunted 5K & 10K at Loyd H Roland Memorial Park
Sat, Oct 17, 2026Akron, United States
17
Bobcat Trail Races
Sat, Oct 17, 2026Colorado Springs, United States
17
Urban Bourbon Half Marathon and 5K
Sat, Oct 17, 2026Louisville, United States
17
Blue Sky Trail Marathon & Half Marathon
Sat, Oct 17, 2026Fort Collins, United States
17
Gourdy's Pumpkin Run: Akron
Sat, Oct 17, 2026Akron, United States
18
The James Anderson Built on Belief 7k and 1 Mile Walk
Sun, Oct 18, 2026Akron, United States
24
Race to Cure Sarcoma Denver
Sat, Oct 24, 2026Denver, United States
24
Thru the Ville 5K
Sat, Oct 24, 2026Louisville, United States
25
Ghosts and Goblins 5K/10K
Sun, Oct 25, 2026Denver, United States
25
The 14th Annual Odyssey Odyssey - 2026
Sun, Oct 25, 2026Denver, United States
31
2026 Lakes Entrance Running Festival
Sat, Oct 31, 2026Red Feather Lakes, United States
31
Panda Waddle 5k
Sat, Oct 31, 2026Grand Junction, United States
31
Halloween Trick or Trot Run 5K/10K/13.1
Sat, Oct 31, 2026Centennial, United States
31
2026 — Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
Sat, Oct 31, 2026Centennial, United States
1
Louisville Marathon, Half Marathon and 10K
Sun, Nov 1, 2026Louisville, United States
1
Rim Rock Marathon & Half Marathon
Sun, Nov 1, 2026Fruita, United States
7
City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Sat, Nov 7, 2026Denver, United States
7
HRCA Backcountry Wilderness Half Marathon
Sat, Nov 7, 2026Lone Tree, United States
7
Bell Ringer 2 Miler
Sat, Nov 7, 2026Loveland, United States
7
Kessel Run Ultra
Sat, Nov 7, 2026Fruita, United States
8
Veterans Day 5k @ Goat Patch Brewing | 2026 CO Brewery Running Series
Sun, Nov 8, 2026Colorado Springs, United States
14
Louisville Trail Race
Sat, Nov 14, 2026Louisville, United States
14
Cajun Cup 10K & 1 Mile
Sat, Nov 14, 2026Lafayette, United States
14
Run for Mental Health 5K/10K/13.1 DENVER/AURORA
Sat, Nov 14, 2026Centennial, United States
21
Pumpkin Pie 5K/10K
Sat, Nov 21, 2026Denver, United States
21
TURKEY TREK (13.1, 10k, 5k & 2k)
Sat, Nov 21, 2026Arvada, United States
22
Regal Beagle Ultra
Sun, Nov 22, 2026Akron, United States
26
Broomfield Turkey Day 5K/10K
Thu, Nov 26, 2026Broomfield, United States