Half-Marathon races in California, United States — 2026 running calendar

Run to Breast Cancer 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

29 Aug, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

SPASM Crystal Springs Trail Run

Woodside, California, United States

29 Aug, 2026 (Sat)

Free - $90.00

Trail running, Running

10K Half-Marathon 35.4K Marathon +2

Night of the Running Dead 5K, 10K, 1 Miler, Half Marathon SummerWeen Series by Califlow Runs

Long Beach, California, United States

29 Aug, 2026 (Sat)

$30.00 - $58.99

Running

5K 10K Half-Marathon 1.6K

Run to Breast Cancer 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

29 Aug, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Diablo Trail Run

Clayton, California, United States

06 Sep, 2026 (Sun)

Free - $90.00

Trail running, Running

6.4K 16.1K Half-Marathon Marathon +2

The Honey Badger Half (& 10K/5K)

Santa Venetia, California, United States

11 Sep, 2026 (Fri) – 14 Sep, 2026

$45.00 - $95.00

Running, Trail running

5K 10K Half-Marathon +2

National Chocolate Day: Run for Chocolates 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

12 Sep, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

The Running Fence Run: A Run of Freedom- Celebrating Christo's 1976 "Running Fence” art project

Bloomfield, California, United States

12 Sep, 2026 (Sat)

$45.00 - $160.00

Running

Marathon Half-Marathon 10K 5K

Beer City Half™ Bishop Ranch

San Ramon, California, United States

12 Sep, 2026 (Sat)

$25.00 - $100.00

Running

Half-Marathon 10K 5K 1.6K +1

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN FRANCISCO

San Francisco, California, United States

12 Sep, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN DIEGO

San Diego, California, United States

12 Sep, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

12 Sep, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2