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California Half Marathon Calendar

Browse all California Half Marathons in 2025 and 2026 by month and by city below. For each race, you’ll find the history of the half marathon and the course, the most recent year’s course maps, elevation profiles, runner reviews, pricing, and how to sign up.

We dedicate hours every month searching for races to include in the California Half Marathons calendar. If you happen to see any half marathon not included, contact us at [email protected] to submit your race.

Filter California Half Marathons

Filter California Half Marathons

Better World Running Logo
July 4, 2025
100-500 runners
Long Beach, California
Red, White, and Run – 5K, 10K, 10M, and Half Marathon
July 4, 2025
100-500 runners
Long Beach, California
July 5, 2025
1-100 runners
Long Beach, California
July 5, 2025
1-100 runners
Morgan Hill, California
July 5, 2025
1-100 runners
San Mateo, California
Better World Running Logo
July 6, 2025
100-500 runners
Valencia, California
Cauliflow Runs Logo
July 6, 2025
100-500 runners
Long Beach, California
July 12, 2025
1-100 runners
Davis, California
San Lorenzo River 50k Marathon 30k Half Marathon & 10k logo
July 12, 2025
100-500 runners
Santa Cruz, California
Angel Island Half Marathon & 10K
July 12, 2025
1-100 runners
Stinson Beach, California
Brian Waterbury Memorial Rock to Pier Run
July 12, 2025
500-1000 runners
Morro Bay, California
Endless Summer in the LBC 5K, 10K, and Half Marathon
July 12, 2025
100-500 runners
Long Beach, California
July 12, 2025
100-500 runners
San Diego, California
July 12, 2025
100-500 runners
Santa Monica, California
Shoreline Marathon Half Marathon 10k & 5k logo
July 13, 2025
1,000-10,000 runners
Ventura, California
July 13, 2025
100-500 runners
Long Beach, California
LBC Summer Breeze - 5K, 10K, 10 Miler and Half Marathon
July 19, 2025
100-500 runners
Long Beach, California
July 19, 2025
100-500 runners
Castro Valley, California
Better World Running Logo
July 19, 2025
100-500 runners
Long Beach, California
Buffy the Vampire Slayer: Night Stalker 5K, 10K & Half
July 19, 2025
100-500 runners
Canoga Park, California

Running in California

FAQ

What are the most popular California half marathons?

The three most popular California half marathons are the Rock ‘n’ Roll San Diego Half Marathon with over 10,000 runners, the Napa to Sonoma Wine Country Half Marathon with over 6,800 runners, and the Monterey Bay Half Marathon with over 6,300 runners.

What’s the best half marathons in California for beginners in 2025?

There’s a ton of competition for the best California half marathons for beginners. But, we most frequently recommend the OC Marathon & Half Marathon, the Napa Valley Half Marathon, the Rock ‘n’ Roll San Diego Half Marathon and the Surf City Half Marathon as well produced races with beautiful courses and big crowds. If you’re willing to travel, here’s our full list of best half marathons for beginners.

Which months can I run a half marathon in California?

You can run a half marathon in California in January, February, April, May, June, July, August, September, October, November, and December.

What are the best California half marathons?
Every year, we rank our favorite and most scenic California half marathons. This year, we rated San Diego Beach & Bay, the OC Half Marathon, Santa Rosa Half Marathon, and the Surf City Marathon amongst our favorites.

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