Half-Marathon races in California, United States — 2026 running calendar

Oct

18

MISSION INN RUN

Riverside, California, United States

Running Walking

5K 10K Half-Marathon 2K +4

Oct

18

Witches Wave - Halloween Run 5K, 10K, and Half Marathon by Califlow Runs

Huntington Beach, California, United States

Running

5K 10K Half-Marathon

Oct

18

Pasadena Trail Half & 10k/5k

Pasadena, California, United States

Running

Half-Marathon 10K 5K

Oct

17

Night of the Living Runners – 5K, 10K, 10-Miler, Half Marathon

Long Beach, California, United States

Running

5K 10K 16.1K Half-Marathon

Oct

17

Back to the Future: 88 MPH Dash 5K, 10K & Half

Canoga Park, California, United States

Running

5K 10K Half-Marathon

Oct

11

Bizz Johnson

Susanville, California, United States

Running

Ultra Half-Marathon 10K

Oct

11

Fredrick Michael Gibson 5K/10K & Half Marathon Walk/Run for Depression Awareness

Simi Valley, California, United States

Running

Half-Marathon 10K 5K 1K +2

Oct

11

Champion Mine Trail Race

Nevada City, California, United States

Running

Half-Marathon 10K 5K

Oct

11

2026 Humboldt Redwoods Marathon, Half Marathon, 5K

Weott, California, United States

Running

Half-Marathon 5K Marathon

Oct

10

Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO

San Francisco, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Oct

10

Coffee Lovers Run 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Oct

10

Coffee Lovers Run 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8