2018 - 2019 Colorado Race Calendar

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Colorado among 692 races.

692 races

Thrashers 5K Color Run/Walk

2018-07-25 - 17:00
North America / USA / Mountain Region / Colorado / Holyoke
5k race
Road Running Solo

Six Pack Summer Series Westminster- 4 mile & 5k

4 mile
2018-07-26 - 18:30
North America / USA / Mountain Region / Colorado / Westminser
Shorter than 10 km race
Running

Six Pack Summer Series Westminster- 4 mile & 5k

5k
2018-07-26 - 18:30
North America / USA / Mountain Region / Colorado / Westminser
5k race
Running

Ouray 100 Mile Endurance Run

102.1 Miles
2018-07-27 - 08:00
North America / USA / Mountain Region / Colorado / Ouray
Ultramarathon
Mountain Trail Running Mountain Solo

Audi Power of Four Trail Run

50K
2018-07-28 - 06:00
North America / USA / Mountain Region / Colorado / Aspen
Ultramarathon
Trail Running Solo

Audi Power of Four Trail Run

25K
2018-07-28 - 09:30
North America / USA / Mountain Region / Colorado / Aspen
Half Marathon to Full Marathon
Trail Running Solo

Audi Power of Four Trail Run

10K
2018-07-28 - 11:30
North America / USA / Mountain Region / Colorado / Aspen
Shorter than 10 km race
Trail Running Solo

Bubble RUN™ Denver!

2018-07-28 - 08:00
North America / USA / Mountain Region / Colorado / Denver
5k race
Road Running Solo

Heritage Eagles 5K

2018-07-28 - 08:00
North America / USA / Mountain Region / Colorado / Littleton
5k race
Road Running Solo

Living Journeys Half Marathon

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

Never Summer 100km

2018-07-28 - 05:30
North America / USA / Mountain Region / Colorado / Gould
Ultramarathon
Western States Qualifier Trail Running Mountain Solo

Ouray 100 Mile Endurance Run

51.9 Miles
2018-07-28 - 12:00
North America / USA / Mountain Region / Colorado / Ouray
Ultramarathon
Mountain Trail Running Mountain Solo
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