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

Apr

11

Penn Valley Daffodil Race

Penn Valley, California, United States

$25.00 - $35.00

Running Walking

5K 10K

Apr

11

Cal Tri Lake Perris - 4.11.27

Perris, California, United States

Free - $500.00

Triathlon Aquabike Swimrun Swimming Running Duathlon

Sprint Triathlon Olympic Triathlon Youth Sprint Triathlon Sprint RunBikeRun (5km run, 15km bike, 5km run) +15

Apr

11

Beer City San Francisco

San Francisco, California, United States

$30.00 - $100.00

Running

Half-Marathon 10K 5K 1.6K +1

Apr

11

The Rodeo Run 5K/10K

Huntington State Beach, California, United States

$28.00 - $45.00

Running

5K 10K 1.6K

Apr

17

Mountains 2 Beach Marathon and Half

Ventura, California, United States

$25.99 - $139.99

Running

5K 47.2K 26.1K 15K +4

Apr

17

Wild Flowers 10k

Auburn, California, United States

$80.00

Running

10K

Apr

17

Run for the Planet -An Earth Day Run by CaliFlow Runs - 5K, 10K, Half Marathon

Long Beach, California, United States

$25.00 - $48.99

Running

5K 10K Half-Marathon 1.6K

Apr

17

California Classic Half Marathon

Fresno, California, United States

$45.00 - $85.00

Running

Half-Marathon 10K 5K Classic Virtual - Run +1

Apr

17

Alameda Island Running Festival

Alameda, California, United States

Free - $100.00

Running

1.6K Yoga on the patio - Presented by Breathing Room 8K Half-Marathon +2

Apr

17

Badger Cove

Livermore, California, United States

$35.00 - $90.00

Running

Half-Marathon 10K 5K

Apr

18

Millerton Lake Crows Nest Triathlon, 5k & 10k

Friant, California, United States

$45.00 - $1,000.00

Triathlon Duathlon Running Aquabike Swimrun

Super Sprint Triathlon 22.2K 45.2K Sprint Triathlon Relay +15

Apr

18

Dolphin Dash – 5K, 10K, and Half Marathon

Santa Monica, California, United States

$24.50 - $38.50

Running

5K 10K Half-Marathon