Half Marathons in California in October
11 half marathons in California are on the calendar for October 2027, in San Jose, San Diego, Modesto, South Lake Tahoe and more. Tap a race for the course, weather, past results and how to register.
2027 Rock 'n' Roll San Jose · San Jose, California
2027 Pacific Beachfest Run · San Diego, California
2027 Peace Officer Memorial Run · Modesto, California
2027 Lake Tahoe Marathon · South Lake Tahoe, California
2027 Quicksilver Trail Challenge · San Jose, California
2027 Diablo Summit Stomp · Walnut Creek, California
2027 SPACEROCK Trail Race · Agua Dulce, California
2027 Cloverdale Vineyard Races · Cloverdale, California
2027 Fleet Feet Fall Classic - Trail October 18th, 2026 · Chico, California
2027 MISSION INN RUN · Riverside, California
2027 Malibu Moves: Half Marathon, 10K, 5K, 1-Mi & 1K · Malibu, California