5K races in California, United States — 2026 running calendar

2026 Cal Tri LA - 10.18.26

Playa Del Rey, California, United States

Oct 18, 2026 (Sun)

Free - $153.86

Triathlon, Running, Swimming

Ultra 5K 1.5K 10K +1

Lake Evans Triathlon, 5k & 10k

Bakersfield, California, United States

Oct 18, 2026 (Sun)

$45.00 - $230.00

Triathlon, Aquabike, Swimrun, Duathlon, Running

23.7K 48.4K 18.7K 5.3K +12

MISSION INN RUN

Riverside, California, United States

Oct 18, 2026 (Sun)

$25.00 - $95.00

Running, Walking

5K 10K Half-Marathon 2K +4

2026 - City to the Sea Half Marathon & 5K

San Luis Obispo, California, United States

Oct 18, 2026 (Sun)

$50.00 - $110.00

Running

Half-Marathon 5K

SD HipHop 5k

San Diego, California, United States

Oct 18, 2026 (Sun)

Free - $35.00

Running

4.8K

Vampire Run - Unite for Bleeding Disorders

Roseville, California, United States

Oct 18, 2026 (Sun)

$15.00 - $25.00

Running, Walking

5K 1.6K

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

Huntington Beach, California, United States

Oct 18, 2026 (Sun)

$38.99 - $48.99

Running

5K 10K Half-Marathon

Beverly Hills Run of the Stars: 2026

Beverly Hills, California, United States

Oct 18, 2026 (Sun)

$15.00 - $40.00

Running

5K 1K

Monster Mash Dash Halloween Run

Fresno, California, United States

Oct 24, 2026 (Sat)

$25.00 - $50.00

Running

5K 6.4K

Vaquero Strong 5K

Irvine, California, United States

Oct 24, 2026 (Sat)

$30.00

Running

5K

Miles for Migraine San Francisco

San Francisco, California, United States

Oct 24, 2026 (Sat)

Running

3.2K 5K

Malibu Moves: Half Marathon, 10K, 5K, 1-Mi & 1K

Malibu, California, United States

Oct 24, 2026 (Sat) – Oct 25, 2026

Free - $170.00

Running

10K 5K 1K Half-Marathon +8