California Half Marathon Calendar 2025-2026

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Explore the best half marathons in California for 2025-2026! Our updated list features 372 exciting races across the region. Find your next race in California below and join the running community at these great events!

December 2025
Dec
28
Sunday

Run In The New Year Half Marathon

5 km 10 km 13 mi
Dec
28
Sunday

Countdown to the Finish Half Marathon

5 km 10 km 10 mi 13 mi
January 2026
Jan
1
Thursday

Brazen New Year's Day

Trail Run 5 km 10 km 13 mi
Jan
3
Saturday

Hacienda Hills Trail Run - Winter

Trail Run 5 km 10 km ... 26 mi 50 km
Jan
4
Sunday

Grievances & Gratitude Run – Half Marathon

5 km 10 km 13 mi
Jan
4
Sunday

Del Dios Trail Race

Trail Run 5 km 10 km 13 mi 50 km
Jan
10
Saturday

Resolution Run - San Diego

5 km 10 km 13 mi
Jan
10
Saturday

Citrus Heritage Run

5 km 10 km 13 mi
Jan
10
Saturday

San Diego 50 Mile & Trail Marathons

Trail Run 5 km 5 mi ... 26 mi 50 mi
Jan
18
Sunday

Carlsbad Marathon

5 km 13 mi 26 mi
Jan
24-25
Sa - Su

Socal Spartan Event Weekend

Obstacle Run 5 km 10 km 21 km
Jan
24
Saturday

Folsom Lake Sweetwater Trail Run

Trail Run 5 km 10 km ... 26 mi 50 km
Jan
24
Saturday

Coyote Hills Run

Trail Run 5 km 10 km 13 mi
February 2026
Feb
1
Sunday

Surf City Marathon

5 km 13 mi 26 mi
Feb
7
Saturday

Mt. Umunhum Trail Conquest - Winter

Trail Run 5 km 7 mi ... 26 mi 50 km
Feb
7
Saturday

Death Valley Marathon

10 km 13 mi 26 mi
Feb
14
Saturday

The Ranch 50K

Trail Run 13 mi 50 km
Feb
14
Saturday

The HEART RUN Half Marathon

5 km 10 km 13 mi
Feb
14
Saturday

Bay Breeze - San Leandro

Trail Run 5 km 10 km 13 mi
Feb
21
Saturday

Fourmidable

Trail Run 13 km 13 mi 35 km 50 km
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