California Half Marathon Calendar 2025-2026

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Explore the best half marathons in California for 2025-2026! Our updated list features 310 exciting races across the region. Find your next race in California below and join the running community at these great events!

March 2025
Mar
9
Sunday

Pinch Me I'm Running Half Marathon

5 km 10 km 13 mi
Mar
9
Sunday

Tesoro Viejo Spring Classic Half Marathon

Trail Run 5 km 10 km 13 mi
Mar
9
Sunday

Run for the Gold - Half Marathon

5 km 10 km 13 mi
Mar
14-17
Fr - Mo

The Rattlesnake Ramble

Trail Run 5 km 10 km 13 mi
Mar
15
Saturday

Old West Trail Runs

Trail Run 13 mi 26 mi 50 km
Mar
15-16
Sa - Su

Shamrock'n Weekend

5 km 10 km 13 mi
Mar
15
Saturday

Zoom San Francisco

5 km 10 km 13 mi
Mar
15
Saturday

Fort Bragg Whale Run

5 km 10 km 13 mi
Mar
15
Saturday

Leprechaun Full Moon Chase - Half Marathon

5 km 10 km 13 mi
Mar
15
Saturday

Pi Day Race Full Marathon

13 mi 26 mi 6 hr
Mar
16
Sunday

Rockin' Shamrock Half Marathon - Valencia

5 km 10 km 15 km 13 mi
Mar
16
Sunday

Moonlight Beach Half Marathon

5 km 10 km 13 mi
Mar
16
Sunday

The Long Beach Leprechaun Run Half Marathon

5 km 10 km 13 mi
Mar
22
Saturday

South Hills Single Track Trail Run - Spring

Trail Run 5 km 10 km ... 26 mi 50 km
Mar
22
Saturday

Inside Trail - Knickerbocker Canyon Trail Run

Trail Run 5 km 10 km 13 mi 35 km
Mar
22
Saturday

Valencia Trail Race

Trail Run 10 km 13 mi 50 km
Mar
22
Saturday

Napa Valley Trail Marathon

Trail Run 10 km 13 mi 26 mi
Mar
22
Saturday

Redwood (Spring) Trail Run

Trail Run 5 mi 13 mi ... 26 mi 50 km
Mar
22
Saturday

Spring Equinox Half Marathon - Long Beach

5 km 10 km 15 km 13 mi
Mar
22
Saturday

Cat in the Hat Run Half Marathon

5 km 10 km 10 mi 13 mi
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