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35 events found.

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This Month

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3 events, 27

2026-09-25
Red Feather Trail Jamboree
Red Feather Trail Jamboree
2026-09-26
Sangre de Cristo Ultras
Sangre de Cristo Ultras
2026-09-26
Desert’s Edge Triathlon
Desert’s Edge Triathlon
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8 events, 31

8:00 AM

Narrowleaf Lake Run

(Loveland, CO)

8:00 AM

Spooky Sprint Half Marathon

(Colorado Springs, CO)

8:00 AM

Colorado 24 Hour Run

(Fort Collins, CO)

9:00 AM

Foundry Halloween 5K

(Steamboat Springs, CO)

9:30 AM

I Ain’t Scared (of 5K)

(Thornton, CO)

10:00 AM

EAPL Zombie Run 5K

(Evergreen, CO)

10:00 AM

Boos & Brews Halloween 5K

(Denver, CO)

10:00 AM

Halloween Peach 5K

(Cedaredge, CO)

September 25
September 25 @ 7:00 AM - September 27 @ 2:00 PM

Red Feather Trail Jamboree

(Red Feather Lakes, CO)

All day

Sangre de Cristo Ultras

(Westcliffe, CO)

September 26 @ 8:00 AM - September 27 @ 5:00 PM

Desert’s Edge Triathlon

(Fruita, CO)

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October 31
October 31 @ 8:00 AM

Narrowleaf Lake Run

(Loveland, CO)

October 31 @ 8:00 AM

Spooky Sprint Half Marathon

(Colorado Springs, CO)

October 31 @ 8:00 AM

Colorado 24 Hour Run

(Fort Collins, CO)

October 31 @ 9:00 AM

Foundry Halloween 5K

(Steamboat Springs, CO)

October 31 @ 9:30 AM

I Ain’t Scared (of 5K)

(Thornton, CO)

October 31 @ 10:00 AM

EAPL Zombie Run 5K

(Evergreen, CO)

October 31 @ 10:00 AM

Boos & Brews Halloween 5K

(Denver, CO)

October 31 @ 10:00 AM

Halloween Peach 5K

(Cedaredge, CO)

  • Sep
  • This Month
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Colorado Runner Events
  • Cookie Chase - Denver, CO
  • Donut Dash - Denver, CO
  • Flamingo Day 5K - Denver, CO
  • Ghosts & Goblins 5K/10K - Denver, CO
  • Greenland Trail Races - Larkspur, CO
  • Labor Day Half Marathon - Parker, CO
  • Pumpkin Pie 5K/10K - Denver, CO
  • Ugly Sweater 5K - Denver, CO
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