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!

February 2026
Feb
21
Saturday

San Pasqual Valley Trail Race

Trail Run 10 km 13 mi 20 mi
Feb
21
Saturday

Beer City Half - Santa Rosa

5 km 10 km 13 mi
Feb
22
Sunday

Ventura Marathon

13 mi 26 mi
Feb
28
Saturday

Salmon Falls 50K

Trail Run 13 mi 50 km
Feb
28
Saturday

SOCAL River Marathon

5 km 10 km 13 mi 26 mi
March 2026
Mar
1
Sunday

Napa Valley Marathon

5 km 13 mi 26 mi
Mar
14
Saturday

Old West Trail Runs

Trail Run 13 mi 26 mi 50 km
Mar
14
Saturday

Shamrock'n Weekend

5 km 10 km 13 mi
Mar
15
Sunday

Moonlight Beach Half Marathon

10 km 13 mi
Mar
22
Sunday

Bakersfield Marathon

6 km 10 km 13 mi 26 mi
April 2026
Apr
4-5
Sa - Su

San Jose Spartan Trifecta Weekend

Obstacle Run 5 km 10 km 21 km 50 km
Apr
11
Saturday

Nature Made Great Race: Half Marathon

Trail Run 13 mi
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