2017 - 2018 Colorado Marathon Calendar

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

36 races

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

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

Mountain RATS

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

Colorado Springs Marathon

September 30, 2017 Race day in 9 days
USA / Mountain Region / Colorado / Colorado Springs
Marathon
Road Running

Boulder Rez Marathon

October 08, 2017 Race day in 17 days
USA / Mountain Region / Colorado / Boulder Reservoir, Boulder
Marathon
Flat

Xterra Marathon of Trail Races

October 08, 2017 Race day in 17 days
USA / Mountain Region / Colorado / Colorado Springs
Marathon
Trail

Blue Sky Trail Marathon

October 21, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Fort Collins
Marathon
Trail

Rim Rock Marathon

November 04, 2017 Race day in about 1 month
USA / Mountain Region / Colorado / Grand Junction
Marathon
Road Running Relay

Dust Bowl Marathon Series Day 4

March 31, 2018 Race day in 6 months
USA / Mountain Region / Colorado / Lamar
Marathon
Dust Bowl Series

All-Out Beat the Heat 1M, 5K, 10K, Half Marathon & Full Marathon

April 14, 2018 Race day in 7 months
USA / Mountain Region / Colorado / Westminster
Marathon
All-Out Multisport Productions

Kaiser Permanente Colfax Marathon

May 20, 2018 Race day in 8 months
USA / Mountain Region / Colorado / Denver
Marathon
Boston Qualifier Charity Fun Road Running Fund raising Relay Wheelchair

REVEL Rockies Marathon & Half Marathon

June 03, 2018 Race day in 9 months
USA / Mountain Region / Colorado / Denver
Marathon
Charity Road Running REVEL Race Series Fast Boston Qualifier

Steamboat Marathon, Half Marathon and 10K

June 03, 2018 Race day in 9 months
USA / Mountain Region / Colorado / Steamboat Springs
Marathon
Charity Road Running Steamboat Springs Running Series Boston Qualifier Hilly Wheelchair
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