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

Apr

24

Nail the Rail Half Marathon, 10K & 5K

Shasta Lake, California, United States

$29.00 - $69.00

Running

Half-Marathon 10K 5K

Apr

24

Run for Donut San Francisco

San Francisco, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Apr

24

Running Is For The Birds - 5K, 10K, Kids Run - Earth Day Celebration

Huntington Beach, California, United States

Free - $45.00

Running

5K 10K Fuzzy Feathers Kids Run Beach Clean up only +2

Apr

24

Run for Donut San Diego

San Diego, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Apr

24

Kiwanis El Segundo Pta Run for Education 5K|10K

El Segundo, California, United States

$20.00 - $45.00

Running

5K 10K 0.5K 1K

Apr

24

Run for Donut Sacramento

Sacramento, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Apr

25

Grapes of Wrath Triathlon, 5k & 10k

Delano, California, United States

$50.00 - $200.00

Triathlon Duathlon Swimrun Aquabike Running

26.6K 48.1K Sprint Duathlon Sprint Aquathlon +11

May

01

Run, Fiesta, Repeat - Cinco de Mayo 5K, 10K, & Half Marathon

Long Beach, California, United States

$24.99 - $44.99

Running

5K 10K Half-Marathon

May

01

Abrazo 5K Walk & 10K Run

San Ysidro, California, United States

$25.00 - $65.00

Running Walking

10K 5K Social Ticket

May

02

Cal Tri Ventura - 5.2.27

Ventura, California, United States

$28.86 - $500.00

Triathlon Duathlon Aquabike Swimrun Swimming Running

Sprint Triathlon Ultra Sprint RunBikeRun (5km run, 22km bike, 5km run) Sprint SwimBike +9

May

02

May the be with You- The Empire Strides Back 5K, 10K, & Half Marathon by Califlow Runs

Long Beach, California, United States

$18.00 - $64.99

Running

5K 10K Half-Marathon 1.6K +1

May

02

Avenue of the Giants Marathon

Arcata, California, United States

$60.00 - $100.00

Running

Marathon Half-Marathon 10K