10K races in California, United States — 2026 running calendar

Sloth Run 5K/10K/13.1 SAN DIEGO

San Diego, California, United States

20 Jun, 2026 (Sat) – 29 Aug, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

2026 Cal Tri Castaic Lake - 6.20.26

Castaic, California, United States

20 Jun, 2026 (Sat)

Free - $53.86

Triathlon, Running

5K 10K

Sloth Run 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

20 Jun, 2026 (Sat) – 29 Aug, 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

20 Jun, 2026 (Sat) – 29 Aug, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Huntington Lake Triathlon, 5k & 10k

Lakeshore, California, United States

20 Jun, 2026 (Sat)

$50.00 - $240.00

Triathlon, Duathlon, Aquabike, Swimrun, Running

22.9K 48K 27.5K 17.5K +8

Silicon Valley PRIDE 3rd Annual 5K & 10K

San Jose, California, United States

20 Jun, 2026 (Sat)

$65.00 - $75.00

Running

5K 10K

Run Juneteenth Day 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

20 Jun, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

Los Angeles, California, United States

20 Jun, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

San Diego, California, United States

20 Jun, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

San Francisco, California, United States

20 Jun, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Sloth Run 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

20 Jun, 2026 (Sat) – 29 Aug, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

La Noche de La Llorona Run SummerWeen Series 5K 10K Half by Califlow Runs

Long Beach, California, United States

21 Jun, 2026 (Sun)

$29.99 - $65.99

Running

5K 10K 1.6K Half-Marathon