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

Oct

24

Big Sur River Run

Big Sur, California, United States

$20.00 - $65.00

Running

5K 10K

Oct

24

Lasaa Mug Run - Lasd Carson Station

Carson, California, United States

$30.00

Running

5K 10K

Oct

24

RunThrough USA Long Beach 5k,10k & Half Marathon Race

Long Beach, California, United States

$42.00 - $57.75

Running

5K 10K Half-Marathon

Oct

24

SoCal's Sunset Trick or Trot 5k/10K - Halloween Race

Huntington Beach, California, United States

$25.00 - $50.00

Running

5K 10K 0.8K

Oct

25

2026 Winters Spooktacular Fun Run and Costume Contest

Winters, California, United States

$20.00 - $40.00

Running

1.6K 5K 10K +2

Oct

25

Monster Mash

Coronado, California, United States

Free - $60.00

Running

5K 10K 1K Trunk or Treat - EFMP +11

Oct

25

Pleasanton Rotary Halloween Spirit Run

Pleasanton, California, United States

$22.00 - $45.00

Running

5K 10K 6.4K Kids Challenge: 100 yard dash

Oct

25

Finish The Ride and Finish The Run Santa Clarita

Valencia, California, United States

$10.00 - $95.00

Running Cycling

1K 5K 10K 19.3K +2

Oct

25

Alhambra Pumpkin Run

Alhambra, California, United States

$40.00 - $60.00

Running

10K 5K Kiddie Run (Ages 4-5) 1K

Oct

25

Day of The Dead 5K & 10k

Fair Oaks, California, United States

$55.00 - $70.00

Running

5.1K 10K

Oct

25

Sharsheret West Coast Dash

Playa Del Rey, California, United States

$25.00 - $70.00

Running

5K 10K 1K

Oct

25

Trick or Trot 5K, 10K, and Half Marathon by Califlow Runs

Long Beach, California, United States

$38.99 - $48.99

Running

5K 10K Half-Marathon