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Half Marathon Calendar near Berthoud 2025-2026

Monthly updates for Berthoud

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Explore the top half marathons near Berthoud for 2025-2026! We've gathered 19 exciting races in the area. Check out our detailed list below to find your next local race.

March 2026
Mar
14
Sa

Lucky Brew Race 15K

5 km 10 km 15 km Half Marathon
Mar
29
Su

Spring Equinox

5 km Half Marathon
April 2026
Apr
11
Sa

Boulder Rez Half

5 km 10 km Half Marathon
Apr
19
Su

Horsetooth Half Marathon

Half Marathon
Apr
25
Sa

Runs With Scissors Races

Half Marathon Marathon 50 km
Apr
25
Sa

Bigfoot Half Marathon

5 km Half Marathon
Apr
26
Su

Blue Heron Half Marathon

5 km 13 mi
May 2026
May
3
Su

Colorado Marathon

5 km 10 km Half Marathon Marathon
May
3
Su

Longmont Half

5 km Half Marathon
May
9
Sa

Carbon Valley Half Marathon

5 km 13 mi
June 2026
Jun
7
Su

Colorado 13er Half Marathon

3 mi 6 mi 13 mi
Jun
13
Sa

Barr Lake Trail Race

Trail Run 5 km 15 km ... 30 km 50 km
Jun
20
Sa

Red, White and Brew Half Marathon

5 km 10 km Half Marathon
August 2026
Aug
1
Sa

Rocky Mountain Half Marathon

5 km 13 mi
Aug
16
Su

Erie Half

5 km Half Marathon
September 2026
Sep
27
Su

Run Boulderthon: The Boulder Marathon

5 km 10 km Half Marathon Marathon
October 2026
Oct
4
Su

Windsor Marathon

3 mi 6 mi 13 mi 26 mi
Oct
17-18
Sa - Su

Blue Sky Trail Marathon

Trail Run 13 mi 27 mi
November 2026
Nov
14
Sa

Louisville Trail Race

Trail Run 3 mi 6 mi 13 mi