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

Oct

10

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

San Diego, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Oct

04

Napa Half Marathon

Napa, California, United States

Running

Half-Marathon 10.5K

Oct

04

Redding Breakfast Lions Turtle Bay Run 2026

Redding, California, United States

Running

Half-Marathon 10K 3.2K

Oct

04

Hallo-Thanks-Mas Dash – 5K, 10K, and Half Marathon

San Diego, California, United States

Running

5K 10K Half-Marathon

Oct

04

Peace Officer Memorial Run

Modesto, California, United States

Running

Half-Marathon 5K 1K +3

Oct

04

Judgment Day Half Marathon, 10K & 5K Run/Walk

Bakersfield, California, United States

Running

Half-Marathon 10K 5K

Oct

03

Auburn Half Marathon

Auburn, California, United States

Running

21.9K 12.2K 5.5K Half-Marathon

Oct

03

Mean Girls 5K, 10K & Half Marathon

Canoga Park, California, United States

Running

5K 10K Half-Marathon

Oct

02

Sgrail Marin - Triathlon & Trail Half Marathon

San Rafael, California, United States

Triathlon Running Trail running

Kids "Fun" Event Ultra Half-Marathon +1

Sep

27

Take Me to Your Pizza : Alien Dash 5K. 10K. Half Marathon Sponsored by Domino's Pizza

Long Beach, California, United States

Running

5K 10K Half-Marathon 1.6K

Sep

27

The Retro Run – 5K, 10k, 10m, and Half Marathon

Long Beach, California, United States

Running

5K 10K 16.1K Half-Marathon

Sep

26

Oktoberfest Run 5K/10K/13.1 SAN DIEGO

San Diego, California, United States

Running

5K 10K Half-Marathon 1.6K +2