11 Upcoming Half Marathon Races Near Seaside, CA

San Lorenzo River Trail Run

Santa Cruz, CA

Saturday, July 11th, 2026

Half

Ultra

Marathon

Trail

View details for race San Lorenzo River Trail Run

Monterey Bay Half 13.1, 10k, 5k

Pacific Grove, CA

Sunday, August 9th, 2026

Half

Fast

View details for race Monterey Bay Half 13.1, 10k, 5k

Santa Cruz Trail Run

Felton, CA

Saturday, August 22nd, 2026

Half

10K

Trail

View details for race Santa Cruz Trail Run

2026 Big Sur Trail Marathon, Half Marathon &amp...

Big Sur, CA

Saturday, September 26th, 2026

Half

Marathon

Trail

View details for race 2026 Big Sur Trail Marathon, Half Marathon & 5 Mile

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ZombieRunner Halloween

San Jose, CA

Saturday, October 31st, 2026

10K

Half

Trail

View details for race ZombieRunner Halloween

Zoom Turkey Trot

San Jose, CA

Thursday, November 26th, 2026

10K

Half

Trail

View details for race Zoom Turkey Trot

Summit Rock 2026

Saratoga, CA

Saturday, December 12th, 2026

Half

10K

Trail

View details for race Summit Rock 2026

Horseshoe Lake Trail Run

Los Gatos, CA

Saturday, April 17th, 2027

1 Mile

Half

Ultra

Trail

View details for race Horseshoe Lake Trail Run

Santa Cruz Westside Half Marathon 10k/5k

Santa Cruz, CA

Sunday, April 18th, 2027

Half

10K

View details for race Santa Cruz Westside Half Marathon 10k/5k

Beer City Half™ San Jose

San Jose, CA

Saturday, May 29th, 2027

Half

10K

View details for race Beer City Half™ San Jose

San Jose Half Marathon & 8K

San Jose, CA

Sunday, June 6th, 2027

Half

Fast

View details for race San Jose Half Marathon & 8K

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