2017 - 2018 Colorado Race Calendar

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Colorado among 627 races.

627 races

Six Pack Series Winter Westminster 4 mile & 5k

February 25, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Westminster
Shorter than 10 km race - 4 miles

Elk Meadow Winter Trail Race

February 25, 2017 Race day in 5 days
USA / Mountain Region / Colorado / Elk Meadow Drive
10 km race to Half Marathon - 10 miles
Trail Snow

PREDICTION RUN! Westminster

March 04, 2017 Race day in 12 days
USA / Mountain Region / Colorado / Westminster
5k race - 5 kilometers
Charity

DreamCatcher Half Marathon

March 04, 2017 Race day in 12 days
USA / Mountain Region / Colorado / Grand Junction
Half Marathon
Charity

Funner to be a Runner

March 05, 2017 Race day in 13 days
USA / Mountain Region / Colorado / Pueblo
Shorter than 10 km race - 1.200 miles

Erin Go Braugh 7.77k

March 11, 2017 Race day in 19 days
USA / Mountain Region / Colorado / Westminster
Shorter than 10 km race - 7.770 kilometers

Pi Day Pi K

Cutie Pi
March 11, 2017 Race day in 19 days
USA / Mountain Region / Colorado / Fort Collins
Shorter than 10 km race - 0.314 miles
Charity

Pi Day Pi K

Standard Pi
March 11, 2017 Race day in 19 days
USA / Mountain Region / Colorado / Fort Collins
Shorter than 10 km race - 3.140 kilometers
Charity

Run Through Time Marathon and Hard Half

1/2 Marathon
March 18, 2017 Race day in 26 days
USA / Mountain Region / Colorado / Salida
Half Marathon
Trail

Six Pack Series Winter Westminster 5 mile & 5k

5k
March 18, 2017 Race day in 26 days
USA / Mountain Region / Colorado / Westminster
5k race - 5 kilometers

Six Pack Series Winter Westminster 5 mile & 5k

5 mile
March 18, 2017 Race day in 26 days
USA / Mountain Region / Colorado / Westminster
Shorter than 10 km race - 5 miles

High Line Canal 100K

March 18, 2017 Race day in 26 days
USA / Mountain Region / Colorado / Littleton
Ultramarathon - 100 kilometers
Flat

Run Through Time Marathon and Hard Half

Marathon
March 18, 2017 Race day in 26 days
USA / Mountain Region / Colorado / Salida
Marathon
Trail

Spring Fever 5K, 10K & Half Marathon

Spring Fever 10K
March 19, 2017 Race day in 27 days
USA / Mountain Region / Colorado / Golden
10k race
All-Out Multisport Productions

Spring Fever 5K, 10K & Half Marathon

Spring Fever 5K
March 19, 2017 Race day in 27 days
USA / Mountain Region / Colorado / Golden
5k race - 5 kilometers
All-Out Multisport Productions