2017 - 2018 Colorado Race Calendar

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Colorado among 665 races.

665 races

Thrashers 5K Color Run/Walk

July 26, 2017 Race day in 2 days
USA / Mountain Region / Colorado / Holyoke
5k race
Walk Charity

High Lonesome 100

July 28, 2017 Race day in 4 days
USA / Mountain Region / Colorado / Salida
Ultramarathon

Black Hawk Trail Half Marathon and 10k

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Golden
10k race
Trail Endurance Race Series

Black Hawk Trail Half Marathon and 10k

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Golden
Half Marathon
Trail Endurance Race Series

Discrete Cirque Series - Arapahoe Basin, CO

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Keystone
10 km race to Half Marathon
Trail

Discrete Cirque Series - Arapahoe Basin, CO

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Keystone
10 km race to Half Marathon
Trail

Discrete Cirque Series - Arapahoe Basin, CO

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Keystone
10 km race to Half Marathon
Trail

Fort Collins Human Race

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Fort Collins
10k race
Charity Flat Green Road Running Fast

Fort Collins Human Race

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Fort Collins
5k race
Charity Flat Green Road Running Fast

Fort Collins Human Race

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Fort Collins
Half Marathon
Charity Flat Green Road Running Fast

Grand Mesa 100

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Grand Mesa
Ultramarathon
Trail Hilly

Grand Mesa 100

July 29, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Grand Mesa
Half Marathon to Full Marathon
Trail
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