2017 - 2018 Colorado Marathon Calendar

Browse our Marathon Calendar for races organized in Colorado among 36 races.

36 races

Aspen Backcountry Marathon

August 12, 2017 Race day in 20 days
USA / Mountain Region / Colorado / Aspen
Marathon
Trail Mountain Hilly

Mt. Sneffels Marathon/Half

August 12, 2017 Race day in 20 days
USA / Mountain Region / Colorado / Ouray
Marathon

Silverton Alpine Marathon

August 19, 2017 Race day in 27 days
USA / Mountain Region / Colorado / Silverton
Marathon
Trail Aravaipa Running Mountain

Pikes Peak Marathon

August 20, 2017 Race day in 28 days
USA / Mountain Region / Colorado / Colorado Springs
Marathon
Trail Mountain

Marathon of the Legends Team Relay & 20k Team Walk

August 27, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Walsenburg
Marathon
Walk

Breck Crest Mountain Marathon & Half Marathon

September 03, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Breckenridge
Marathon
Hilly

American Discovery Trail Marathon

September 04, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Colorado Springs
Marathon
Trail Boston Qualifier

Breckenridge Road Marathon

September 16, 2017 Race day in about 2 months
USA / Mountain Region / Colorado / Breckenridge
Marathon
Road Running

Center of the Nation Series - Day 6

September 16, 2017 Race day in about 2 months
USA / Mountain Region / Colorado / Sterling
Marathon
Mainly Marathons Center of the Nation Series Walk

Hermit Pass Marathon

September 17, 2017 Race day in about 2 months
USA / Mountain Region / Colorado / Westcliffe
Marathon
Trail Mountain

All-Out Fallfest 1M, 5K,10K, Half & Full Marathon

September 23, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Westminster
Marathon

Mountain RATS

September 23, 2017 Race day in 2 months
USA / Mountain Region / Colorado / Eagle
Marathon
Trail Mountain
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