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

San Diego Beach & Bay Half Marathon

San Diego, California, United States

Apr 10, 2027 (Sat)

Free - $109.00

Running

Half-Marathon 10K 5.1K 5K +1

Run for Bagels 5K/10K/13.1 Sacramento

Sacramento, California, United States

Apr 10, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Run for Bagels 5K/10K/13.1 San Diego

San Diego, California, United States

Apr 10, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Run for Bagels 5K/10K/13.1 San Francisco

San Francisco, California, United States

Apr 10, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Morgan Hill AAUW Wildflower Run

Morgan Hill, California, United States

Apr 11, 2027 (Sun)

$31.00 - $55.00

Running, Walking

10K 5K 2K +2

Cal Tri Lake Perris - 4.11.27

Perris, California, United States

Apr 11, 2027 (Sun)

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

Badger Cove

Livermore, California, United States

Apr 17, 2027 (Sat)

$35.00 - $90.00

Running

Half-Marathon 10K 5K

Mountains 2 Beach Marathon and Half

Ventura, California, United States

Apr 17, 2027 (Sat) – Apr 18, 2027

$25.99 - $139.99

Running

5K 47.2K 26.1K 15K +4

Wild Flowers 10k

Auburn, California, United States

Apr 17, 2027 (Sat)

$80.00

Running

10K

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

Long Beach, California, United States

Apr 17, 2027 (Sat)

$25.00 - $48.99

Running

5K 10K Half-Marathon 1.6K

Nail the Rail Half Marathon, 10K & 5K

Shasta Lake, California, United States

Apr 24, 2027 (Sat)

$29.00 - $69.00

Running

Half-Marathon 10K 5K

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

Huntington Beach, California, United States

Apr 24, 2027 (Sat)

Free - $45.00

Running

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