Half Marathons in California, United States 2026 35 events
21.1 kilometres (13.1 miles) — the bridge between the 10K and the full marathon. Browse upcoming events in United States.
Upcoming races
RunningIn 9 days
Bayside Saved by the Bell 5K, 10K & Half Marathon
◎ Canoga Park, USA▤ Sep 19, 2026
5 km
RunningIn 2 weeks
Ridge Rambler Half Marathon
◎ Bridgeport, USA▤ Sep 26, 2026
21.1 km
RunningIn 2 weeks
2026 Big Sur Trail Marathon, Half Marathon & 5 Mile
◎ Big Sur, USA▤ Sep 26, 2026
8 km
RunningIn 2 weeks
The Auburn Half Marathon 2026
◎ Auburn, USA▤ Sep 27, 2026
21.1 km
RunningIn 3 weeks
Pacific Beach Half Marathon & 5K
◎ San Diego County, USA▤ Oct 3, 2026
5 km
RunningIn 4 weeks
Clo Cow Half Marathon, 10K & 5K
◎ Petaluma, USA▤ Oct 11, 2026
10 km
RunningIn 4 weeks
Fredrick Michael Gibson 5K/10K & Half Marathon Walk/Run for Depression Awareness
◎ Simi Valley, USA▤ Oct 11, 2026
5 km
RunningIn 4 weeks
2026 Humboldt Redwoods Marathon, Half Marathon, 5K
◎ Weott, USA▤ Oct 11, 2026
42.2 km
RunningIn 5 weeks
The Peak 50K, Marathon & Half Marathon
◎ Julian, USA▤ Oct 17, 2026
50 km
RunningIn 5 weeks
2026 - City to the Sea Half Marathon & 5K
◎ San Luis Obispo, USA▤ Oct 18, 2026
21.1 km
RunningIn 6 weeks
DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)
◎ Bakersfield, USA▤ Oct 24, 2026
21.1 km
RunningIn 6 weeks
2026 Napa Fall Wine Country Marathon, Half Marathon, 10K, & 5K
◎ Calistoga, USA▤ Oct 24, 2026
10 km
RunningIn 7 weeks
Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs
◎ Long beach, USA▤ Nov 1, 2026
5 km
RunningIn 8 weeks
Santa Barbara Half Marathon & 5K
◎ Santa Barbara, USA▤ Nov 8, 2026
5 km
RunningIn 8 weeks
2026 Silver Strand Veterans Day Half Marathon, 10 Miler, 12K & 5K - San Diego
◎ Coronado, USA▤ Nov 8, 2026
21.1 km
RunningIn 8 weeks
Monterey Bay Half Marathon
◎ Monterey, USA▤ Nov 8, 2026
21.1 km
RunningIn 9 weeks
Catalina Island Half-Marathon & 10K
◎ Avalon, USA▤ Nov 14, 2026
21.1 km
RunningIn 9 weeks
Berkeley Half Marathon 2026
◎ Berkeley, USA▤ Nov 14, 2026
21.1 km
RunningIn 3 months
2026 Death Valley Trail Marathon & Half Marathon
◎ Death Valley, USA▤ Dec 5, 2026
21.1 km
RunningIn 3 months
2026 Hark the Herald Half Marathon & 10K
◎ Tiburon, USA▤ Dec 12, 2026
10 km