2018 - 2019 Colorado Half Marathon Calendar

Browse our Half Marathon Calendar for races organized in Colorado among 104 races.

104 races

Dog Days 5K, 10K & Half Marathon

Half Marathon
2018-07-21
North America / USA / Mountain Region / Colorado / City Park, Westminster
Half Marathon
Multi terrain Running Solo

Summertime Prairie Dog Half Marathon, 10K & 5K- Castle Rock

Summertime Prairie Dog Half Marathon - Castle Rock
2018-07-21 - 07:00
North America / USA / Mountain Region / Colorado / Castle Rock
Half Marathon
Road Running

Living Journeys Half Marathon

2018-07-28
North America / USA / Mountain Region / Colorado / Crested Butte
Half Marathon
Trail Running Solo

Rocky Mountain Half Marathon

2018-08-03 - 06:00
North America / USA / Mountain Region / Colorado / Estes Park
Half Marathon
Mountain Running Mountain

Aspen Backcountry Marathon

Half Marathon
2018-08-11
North America / USA / Mountain Region / Colorado / Aspen
Half Marathon
Mountain Trail Running Mountain Solo

Mt. Sneffels Marathon/Half

Mt. Sneffels Half Marathon
2018-08-11 - 07:30
North America / USA / Mountain Region / Colorado / Ouray
Half Marathon
Road Running Solo

Pikes Peak Marathon

Pikes Peak Ascent
2018-08-18 - 07:00
North America / USA / Mountain Region / Colorado / Colorado Springs
Half Marathon
Snow Mountain Trail Running Mountain Solo

All-Out Runapalooza 5K, 10K & Half Marathon

Runapalooza Half Marathon
2018-08-25
North America / USA / Mountain Region / Colorado / Apex Center, Arvada
Half Marathon
Running Solo

Telluride Mountain Run

13 Mile
2018-08-25 - 08:00
North America / USA / Mountain Region / Colorado / Telluride
Half Marathon
Trail Running Mountain Solo

Thirsty 13 Half Marathon

2018-08-25 - 08:00
North America / USA / Mountain Region / Colorado / Durango
Half Marathon
Running

Endurance House Erie Half & 5k

Half Marathon
2018-08-26 - 07:30
North America / USA / Mountain Region / Colorado / Erie
Half Marathon
Running

American Discovery Trail Marathon

Half Marathon
2018-09-03 - 06:30
North America / USA / Mountain Region / Colorado / Colorado Springs
Half Marathon
Trail Running Out & back Solo
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