Browse all October 2016 half marathons in California below. For each race, you’ll find course maps, elevation profiles, runner reviews, fees, results and info on how to sign up.
- Sat, Oct 1: Big Bear North Shore Half Marathon, 10K & 5K in Fawnskin, CA
- Sat, Oct 1: The Exodus Chino Hills Half Marathon & 10K in Chino Hills, CA
- Sat, Oct 1: Oktoberfest Half Marathon, 15K, 10K & 5K in Long Beach, CA
- Sat, Oct 1: Pacifica Summit Run Half Marathon, 50K, 30K & 10K in Pacifica, CA
- Sat, Oct 1: Rocky Ridge Half Marathon, 10K & 5K in San Ramon, CA
- Sat, Oct 1: Sonoma Ultra 50K & Half Marathon in Santa Rosa, CA
- Sun, Oct 2: Heart of Cool Trail Run Half Marathon, 10K & 5K in Cool, CA
- Sun, Oct 2: Kokanee Trail Runs Half Marathon, 5K & 10K in South Lake Tahoe, CA
- Sun, Oct 2: Lions Turtle Bay Run Three Bridges Half Marathon in Redding, CA
- Sun, Oct 2: Napa Half Marathon in Napa, CA
- Sun, Oct 2: Rock ‘n’ Roll San Jose Half Marathon & 10K in San Jose, CA
- Sun, Oct 2: Tiburon Half Marathon in Tiburon, CA
- Sun, Oct 2: Urban Cow Half Marathon, Relay & 5K in Sacramento, CA
- Sat, Oct 8: Bizz Johnson Express Half Marathon in Susanville, CA
- Sat, Oct 8: Carnelian Bay Half Marathon in Carnelian Bay, CA
- Sat, Oct 8: Ocean Breeze Marathon, Half Marathon & 10K in Huntington Beach, CA
- Sat, Oct 8: Yosemite Half Marathon in Bass Lake, CA
- Sun, Oct 9: Bizz Johnson Trail Half Marathon in Susanville, CA
- Sun, Oct 9: City to the Sea Half Marathon & Seaside 5K in San Luis Obispo, CA
- Sun, Oct 9: Emerald Bay Half Marathon in South Lake Tahoe, CA
- Sun, Oct 9: The Fantastic Half Marathon, 15K, 10K & 5K in Santa Monica, CA
- Sun, Oct 9: Healdsburg Half Marathon in Healdsburg, CA
- Sun, Oct 9: Honey Badger Half Marathon, 10K & 5K in San Rafael, CA
- Sun, Oct 9: Hooker Oak Trail Half & Quarter Marathon in Chico, CA
- Sun, Oct 9: Long Beach Marathon & Half Marathon in Long Beach, CA
- Sun, Oct 9: Spooktacular Half Marathon, 10K & 5K in San Diego, CA
- Sat, Oct 15: Los Vaqueros Tarantula Run Half Marathon, 10K & 5K in Brentwood, CA
- Sat, Oct 15: Sierra Trail Half Marathon & 5K in Granite Bay, CA
- Sun, Oct 16: Foster Park Half Marathon, 10K & 5K in Ventura, CA
- Sun, Oct 16: Humboldt Redwoods Marathon, Half Marathon & 5K in Weott, CA
- Sun, Oct 16: Judgment Day Half Marathon in Bakersfield, CA
- Sun, Oct 16: Merco Credit Union Half Marathon & 5K in Merced, CA
- Sun, Oct 16: Spacerock Trail Race Half Marathon, 10K & 5K in Agua Dulce, CA
- Sun, Oct 16: Spooktacular Los Angeles Half Marathon, 10K & 5K in San Dimas, CA
- Sat, Oct 22: Brazen Goonies Half Marathon, 10K & 5K in Vacaville, CA
- Sat, Oct 22: Eldrith Gosney’s Pure Ultra 50K, 36K, Half Marathon & 11K in Muir Beach, CA
- Sat, Oct 22: Lexus LaceUp Running Series Ventura Half Marathon, 10K & 5K in Ventura, CA
- Sat, Oct 22: Marshall Gold Discovery Run in Coloma, CA
- Sat, Oct 22: Napa Wine Country Marathon, Half Marathon & 10K in Calistoga, CA
- Sat, Oct 22: Santa Cruz Island Eco Extreme Half Marathon in Ventura, CA
- Sun, Oct 23: Cloverdale Harvest Marathon, Half Marathon & 10K in Cloverdale, CA
- Sun, Oct 23: Folsom Blues Breakout 13.1 in Folsom, CA
- Sun, Oct 23: Morgan Hill Half Marathon & 5K in Morgan Hill, CA
- Sat, Oct 29: Healdsburg Wine Country Half Marathon in Healdsburg, CA
- Sat, Oct 29: Oakland Hills Trail Run in Oakland, CA
- Sat, Oct 29: OktobeRun Half Marathon & 5K in Redwood City, CA
- Sat, Oct 29: Raptor Ridge Trail Half Marathon & 5K in Escondido, CA
- Sat, Oct 29: Spooky Half Marathon, 15K, 10K & 5K in Long Beach, CA
- Sat, Oct 29: Stinson Beach Marathon, Half Marathon & 7-Mile in Stinson Beach, CA
- Sat, Oct 29: ZombieRunner Halloween Marathon, Half Marathon & 5 Mile in Campbell, CA
- Sun, Oct 30: Monster Dash Half Marathon, 15K, 10K & 5K in Santa Monica, CA
- Sun, Oct 30: Paso Robles Harvest Half Marathon & 5K in Paso Robles, CA
- Sun, Oct 30: Rock ‘n’ Roll Los Angeles Half Marathon in Los Angeles, CA
- Sun, Oct 30: Temecula Half Marathon & 5K in Murrieta, CA
Also see more California half marathons in August and September.
