2018 - 2019 Colorado Race Calendar in August

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Colorado during the month of August among 82 races.

82 races

Sheep Mountain Endurance Run

50K
2019-08-03 - 06:00
North America / USA / Mountain Region / Colorado / Fairplay
Ultramarathon
Trail Running Solo

Sheep Mountain Endurance Run

51 Mile
2019-08-03 - 06:00
North America / USA / Mountain Region / Colorado / Fairplay
Ultramarathon
Trail Running Solo

Six Pack Summer Series Westminster- 5 mile & 5k

5 miles
2019-08-08 - 18:30
North America / USA / Mountain Region / Colorado / Westminster
Shorter than 10 km race
Road Running Solo

Six Pack Summer Series Westminster- 5 mile & 5k

5k
2019-08-08 - 18:30
North America / USA / Mountain Region / Colorado / Westminster
5k race
Road Running Solo

Holy COW Trail Stampede

5k
2019-08-10 - 08:00
North America / USA / Mountain Region / Colorado / Westminster
5k race
Trail Running Solo

Holy COW Trail Stampede

10 Miler
2019-08-10 - 06:30
North America / USA / Mountain Region / Colorado / Westminster
10 km race to Half Marathon
Trail Running Solo

Holy COW Trail Stampede

10k
2019-08-10 - 08:00
North America / USA / Mountain Region / Colorado / Westminster
10k race
Trail Running Solo

Six Pack Summer Series Westminster- 5k & 10k

5k
2019-08-22 - 18:30
North America / USA / Mountain Region / Colorado / Westminster
5k race
Road Running Solo

Six Pack Summer Series Westminster- 5k & 10k

10k
2019-08-22 - 18:30
North America / USA / Mountain Region / Colorado / Westminster
10k race
Road Running Solo

All-Out Runapalooza 1M, 5K, 10K and Half Marathon

Half Marathon
2019-08-24 - 07:00
North America / USA / Mountain Region / Colorado / Arvada
Half Marathon
Road Running Solo

All-Out Runapalooza 1M, 5K, 10K and Half Marathon

10K
2019-08-24 - 07:30
North America / USA / Mountain Region / Colorado / Arvada
10k race
Road Running Solo

All-Out Runapalooza 1M, 5K, 10K and Half Marathon

5K
2019-08-24 - 07:40
North America / USA / Mountain Region / Colorado / Arvada
5k race
Road Running Solo
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