Half Marathons in California, United States 2026
21.1 kilometres (13.1 miles) — the bridge between the 10K and the full marathon. Browse upcoming events in United States.
39 upcoming races
Upcoming Races
Running
Dog Days of Summer – 5K, 10K, 10M, and Half Marathon
Aug 1, 2026Long Beach, USA
Run 5 m
Running
2026 AMERICA’S FINEST CITY HALF MARATHON & 5K
Aug 16, 2026San Diego, USA
Run 5 m
Running
Californian Dreamin 5K, 10K, & Half Marathon by Califlow Runs
Aug 23, 2026Long Beach, USA
Run 5 m
Running
2026 Angel Island Half Marathon & 10K
Aug 29, 2026Tiburon, USA
Run 10 m
Running
Bayside Saved by the Bell 5K, 10K & Half Marathon
Sep 19, 2026Canoga Park, USA
Run 5 m
Running
2026 Big Sur Trail Marathon, Half Marathon & 5 Mile
Sep 26, 2026Big Sur, USA
Run 8 m
Running
Ridge Rambler Half Marathon
Sep 26, 2026Bridgeport, USA
Run 21 m
Running
The Auburn Half Marathon 2026
Sep 27, 2026Auburn, USA
Run 21 m
Running
Pacific Beach Half Marathon & 5K
Oct 3, 2026San Diego County, USA
Run 5 m
Running
2026 Humboldt Redwoods Marathon, Half Marathon, 5K
Oct 11, 2026Weott, USA
Run 42 m
Running
Clo Cow Half Marathon, 10K & 5K
Oct 11, 2026Petaluma, USA
Run 10 m
Running
Fredrick Michael Gibson 5K/10K & Half Marathon Walk/Run for Depression Awareness
Oct 11, 2026Simi Valley, USA
Run 5 m
Running
The Peak 50K, Marathon & Half Marathon
Oct 17, 2026Julian, USA
Run 50 m
Running
2026 - City to the Sea Half Marathon & 5K
Oct 18, 2026San Luis Obispo, USA
Run 21 m
Running
DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)
Oct 24, 2026Bakersfield, USA
Run 21 m
Running
2026 Napa Fall Wine Country Marathon, Half Marathon, 10K, & 5K
Oct 24, 2026Calistoga, USA
Run 10 m
Running
Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs
Nov 1, 2026Long beach, USA
Run 5 m
Running
2026 Silver Strand Veterans Day Half Marathon, 10 Miler, 12K & 5K - San Diego
Nov 8, 2026Coronado, USA
Run 21 m
Running
Santa Barbara Half Marathon & 5K
Nov 8, 2026Santa Barbara, USA
Run 5 m
Running
Monterey Bay Half Marathon
Nov 8, 2026Monterey, USA
Run 21 m