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

Horseshoe Lake Trail Run

Los Gatos, California, United States

17 Apr, 2027 (Sat)

Free - $90.00

Trail running, Running

8.2K Half-Marathon 30K Marathon +2

Mountains 2 Beach Marathon and Half

Ventura, California, United States

17 Apr, 2027 (Sat) – 18 Apr, 2027

$25.99 - $139.99

Running

5K 47.2K 26.1K 15K +4

Nail the Rail Half Marathon, 10K & 5K

Shasta Lake, California, United States

24 Apr, 2027 (Sat)

$29.00 - $69.00

Running

Half-Marathon 10K 5K

SPASM Lake Chabot Trail Run

Castro Valley, California, United States

24 Apr, 2027 (Sat)

Free - $90.00

Trail running, Running

8K Half-Marathon 28.8K Marathon +2

Run, Fiesta, Repeat - Cinco de Mayo 5K, 10K, & Half Marathon

Long Beach, California, United States

01 May, 2027 (Sat)

$24.99 - $44.99

Running

5K 10K Half-Marathon

Pre Reg 2027 Wrigley River Run & Tadpole Trot

Long Beach, California, United States

05 Jun, 2027 (Sat)

$5.00 - $65.00

Running

16.1K Half-Marathon 10K 5K +2

Pre-Registration Bakersfield Marathon 2028

Bakersfield, California, United States

02 Apr, 2028 (Sun)

Running

Marathon Half-Marathon 10K 5K

Blue Moon 5K. 10K. Half Marathon by Califlow Runs

Long Beach, California, United States

31 May, 2026 (Sun)

Running

5K 10K Half-Marathon

The Great White Chase – 5K, 10K, 10M, and Half Marathon

Long Beach, California, United States

31 May, 2026 (Sun)

Running

5K 10K 15K Half-Marathon

16th Annual BEACHFRONT RUN

Ventura, California, United States

30 May, 2026 (Sat)

Running

Half-Marathon 10K 5K 1K

Beer City Half™ San Jose

San Jose, California, United States

30 May, 2026 (Sat)

Running

Half-Marathon 10K 5K 1.6K +1

Cinderella Trail Run

Oakland, California, United States

30 May, 2026 (Sat)

Trail running, Running

8K Half-Marathon 30K Marathon +2