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

2026 Cal Tri Castaic Lake - 6.20.26

Castaic, California, United States

Jun 20, 2026 (Sat)

Triathlon, Running

5K 10K

Huntington Lake Triathlon, 5k & 10k

Lakeshore, California, United States

Jun 20, 2026 (Sat)

Triathlon, Duathlon, Aquabike, Swimrun, Running

22.9K 48K 27.5K 17.5K +8

The Dad Wave 5K

Aptos, California, United States

Jun 20, 2026 (Sat)

Running

5K 3K

Silicon Valley PRIDE 3rd Annual 5K & 10K

San Jose, California, United States

Jun 20, 2026 (Sat)

Running

5K 10K

Nixon 5K for Title IX

Yorba Linda, California, United States

Jun 20, 2026 (Sat)

Running

5K 1K

Sloth Run 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

Jun 20, 2026 (Sat) – Aug 29, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Sloth Run 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

Jun 20, 2026 (Sat) – Aug 29, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Run Juneteenth Day 5K/10K/13.1 SAN FRANCISCO

San Francisco, California, United States

Jun 20, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

Sloth Run 5K/10K/13.1 SAN DIEGO

San Diego, California, United States

Jun 20, 2026 (Sat) – Aug 29, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Sloth Run 5K/10K/13.1 SAN FRANCISCO

San Francisco, California, United States

Jun 20, 2026 (Sat) – Aug 29, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Mission Possible Run

Los Angeles, California, United States

Jun 20, 2026 (Sat)

Running

5K 10K

Run Juneteenth Day 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

Jun 20, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2