Upcoming Half Marathon Races Near Eaton, CO

Arctic Prairie Dog Half, 10k & 5k

Louisville, CO

Sunday, January 18th, 2026

Featured

Half

10K

5K

View details for race Arctic Prairie Dog Half, 10k & 5k

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Lucky Brew Race 5K, 10K, 15k & Half Marathon

Severance, CO

Saturday, March 14th, 2026

5K

10K

15K

View details for race Lucky Brew Race 5K, 10K, 15k & Half Marathon

Spring Equinox

Wellington, CO

Sunday, March 29th, 2026

Half

5K

View details for race Spring Equinox

Prairie Dog Run Series

Louisville, CO

Sunday, April 12th, 2026

Half

View details for race Prairie Dog Run Series

All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

5K

Trail

View details for race All-Out Beat the Heat

Great Western Trail Race

Severance, CO

Saturday, April 18th, 2026

5K

10K

Half

Trail

Fast

View details for race Great Western Trail Race

Horsetooth Half Marathon

Fort Collins, CO

Sunday, April 19th, 2026

Half

Trail

Fast

View details for race Horsetooth Half Marathon

Runs With Scissors Races

Brighton, CO

Saturday, April 25th, 2026

Half

Marathon

Ultra

View details for race Runs With Scissors Races

Bigfoot Half Marathon

Estes Park, CO

Saturday, April 25th, 2026

Half

5K

View details for race Bigfoot Half Marathon

The Colorado Marathon

Fort Collins, CO

Sunday, May 3rd, 2026

Marathon

Half

10K

View details for race The Colorado Marathon

Longmont Half & 5k (LM Half)

Longmont, CO

Sunday, May 3rd, 2026

Half

5K

View details for race Longmont Half & 5k (LM Half)

Colorado 13er (Half Marathon/10k/5k)

Louisville, CO

Sunday, June 7th, 2026

Half

10K

5K

Trail

View details for race Colorado 13er (Half Marathon/10k/5k)

Red, White and Brew 5k, 10k, Half Marathon & 12...

Windsor, CO

Saturday, June 20th, 2026

5K

10K

Half

View details for race Red, White and Brew 5k, 10k, Half Marathon & 12 Hour Last Person Standing

All-Out Dog Days

Westminster, CO

Saturday, July 11th, 2026

Half

10K

5K

Trail

View details for race All-Out Dog Days

Erie Half & 5k

Erie, CO

Sunday, August 16th, 2026

Half

5K

View details for race Erie Half & 5k

Pioneer Prairie Dog Half, 10k & 5k

Westminster, CO

Sunday, August 23rd, 2026

Half

10K

5K

View details for race Pioneer Prairie Dog Half, 10k & 5k

Black Squirrel Half Marathon

Bellvue, CO

Saturday, September 12th, 2026

Half

Trail

View details for race Black Squirrel Half Marathon

All-Out Fall Fest

Westminster, CO

Saturday, September 19th, 2026

Half

10K

5K

Trail

View details for race All-Out Fall Fest

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...

Windsor, CO

Sunday, October 4th, 2026

Marathon

Half

10K

Trail

View details for race Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Westy Half & 5k

Westminster, CO

Sunday, October 11th, 2026

Half

5K

View details for race Westy Half & 5k

Explore more in Eaton, CO

Distances:

5K 10K Half Marathon Marathon

Months:

December January February

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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