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

Halloween Leftovers – 5K, 10K, 10-Miler, Half Marathon

Long Beach, California, United States

Nov 1, 2026 (Sun)

$24.50 - $38.50

Running

5K 10K 16.1K Half-Marathon

Saratoga Education Foundation 5K Fun Run

Saratoga, California, United States

Nov 1, 2026 (Sun)

Free - $30.00

Running

0.4K 5K

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Newport Beach, California, United States

Nov 1, 2026 (Sun)

$43.86 - $153.86

Triathlon, Running, Swimming

Ultra 4.8K 1.5K 9.7K

Two Cities Marathon

Fresno, California, United States

Nov 1, 2026 (Sun)

$60.00 - $140.00

Running

Marathon Half-Marathon 10K 5K

DINO DASH

Tustin, California, United States

Nov 1, 2026 (Sun)

Free - $35.00

Running, Cycling

2K 5K 10K 15K +2

Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs

Long Beach, California, United States

Nov 1, 2026 (Sun)

$25.00 - $58.99

Running

5K 10K Half-Marathon 1.6K

Almond Bowl 5K & 10K November 1st, 2026

Chico, California, United States

Nov 1, 2026 (Sun)

$45.00 - $55.00

Running

5K 10K

Las Calaveritas 10 Miler

Lake View Terrace, California, United States

Nov 1, 2026 (Sun)

$39.00 - $79.00

Running

16.1K 8K 5K

Clarksburg Country Run

Clarksburg, California, United States

Nov 1, 2026 (Sun)

$12.75 - $67.00

Running

29.9K Half-Marathon 10K 5K +2

Beer City Half™ OC

Santa Ana, California, United States

Nov 7, 2026 (Sat)

$25.00 - $95.00

Running

Half-Marathon 10K 5K 1.6K +1

Tunnel to Towers 5K Run & Walk - Santa Rosa, CA

Santa Rosa, California, United States

Nov 7, 2026 (Sat)

Free - $35.00

Running

5K JPMorganChase Employees +1

CUHSD ED Foundation: HERO 5K

Campbell, California, United States

Nov 7, 2026 (Sat)

$50.00

Running

5K