2015 - 2016 Colorado Race Calendar

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Colorado among 508 races.

508 races

  • 1
  • 34

Hardrock 100 Endurance Run

  • 2015-07-10
  • USA | Colorado | Silverton
  • Ultramarathon - 100 miles
  • UTMB Qualifier Trail Mountain Western States Qualifier

Larkspur Trail Half Marathon and 10k

Larkspur Trail 10K
  • 2015-07-11
  • USA | Colorado | Larkspur
  • 10k race
  • Trail Endurance Race Series

Larkspur Trail Half Marathon and 10k

Larkspur Trail Half Marathon
  • 2015-07-11
  • USA | Colorado | Larkspur
  • Half Marathon
  • Trail Endurance Race Series

Sand Creek Half Marathon 5K/10K

Sand Creek 5K
  • 2015-07-11
  • USA | Colorado | Denver
  • Shorter than 10 km race - 5 kilometers
  • Fast Flat Team Road Running

Sand Creek Half Marathon 5K/10K

Sand Creek Half Marathon
  • 2015-07-11
  • USA | Colorado | Denver
  • Half Marathon
  • Fast Flat Road Running

Sand Creek Half Marathon 5K/10K

Sand Creek Half Marathon 10K
  • 2015-07-11
  • USA | Colorado | Denver
  • 10k race
  • Fast Flat Team Road Running

Sheep Mountain 50 Mile Endurance Run

  • 2015-07-11
  • USA | Colorado | Fairplay
  • Ultramarathon - 51 miles
  • Trail

Big Gay 5K Colorado Springs

  • 2015-07-12
  • USA | Colorado | Colorado Springs
  • Shorter than 10 km race - 5 kilometers
  • Road Running Spree Racing

Leadville Silver Rush 50

  • 2015-07-12
  • USA | Colorado | Leadville
  • Ultramarathon - 50 miles
  • Trail Mountain

Six Pack Summer Series Westminster- 2 mile & 5k

2 mile
  • 2015-07-16
  • USA | Colorado | Westminster
  • Shorter than 10 km race - 2 miles

Six Pack Summer Series Westminster- 2 mile & 5k

5k
  • 2015-07-16
  • USA | Colorado | Westminster
  • Shorter than 10 km race - 5 kilometers

Aspen Valley Marathon

Aspen Valley 5K
  • 2015-07-18
  • USA | Colorado | Aspen
  • Shorter than 10 km race - 5 kilometers
  • Fast Charity Road Running

Aspen Valley Marathon

Aspen Valley Half Marathon
  • 2015-07-18
  • USA | Colorado | Aspen
  • Half Marathon
  • Fast Charity Road Running

Aspen Valley Marathon

Aspen Valley Marathon
  • 2015-07-18
  • USA | Colorado | Aspen
  • Marathon
  • Boston Qualifier Fast Charity Road Running

Bubble RUN™ Denver!

  • 2015-07-18
  • USA | Colorado | Denver
  • Shorter than 10 km race - 5 kilometers
  • Charity
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