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

Oct

18

2026 Cal Tri LA - 10.18.26

Playa Del Rey, California, United States

Triathlon Running Swimming

Ultra 5K 1.5K 10K +1

Oct

18

MISSION INN RUN

Riverside, California, United States

Running Walking

5K 10K Half-Marathon 2K +4

Oct

18

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

Huntington Beach, California, United States

Running

5K 10K Half-Marathon

Oct

18

Pasadena Trail Half & 10k/5k

Pasadena, California, United States

Running

Half-Marathon 10K 5K

Oct

17

Springville Apple Run

Springville, California, United States

Running Walking

5K 10K 3.2K 1K

Oct

17

Night of the Living Runners – 5K, 10K, 10-Miler, Half Marathon

Long Beach, California, United States

Running

5K 10K 16.1K Half-Marathon

Oct

17

Back to the Future: 88 MPH Dash 5K, 10K & Half

Canoga Park, California, United States

Running

5K 10K Half-Marathon

Oct

17

Infinite Challenge Run

San Pedro, California, United States

Running

5K 10K

Oct

17

Fresno Twilight 10,000M Track Meet

Fresno, California, United States

Running

10K 1.6K 3.2K

Oct

17

Pomona 5K & 10K

Pomona, California, United States

Running

5K 10K 15K 0.4K +3

Oct

17

The Ruck Challenge

Norco, California, United States

Running

5K 10K

Oct

17

The Red Tulip Run

Danville, California, United States

Running

10K