Trail running Race Calendar in California, United States

Griffith Park Trail Marathon Relay & 8K

Los Angeles, California, United States

07 Jun, 2026 (Sun)

$65.00 - $359.00

Trail running

Marathon 8K

2026 Lake Chabot Trail Challenge (Half Marathon & 5K)

Castro Valley, California, United States

07 Jun, 2026 (Sun)

$40.00 - $65.00

Trail running

Half-Marathon 5K

Bizz Johnson's Southside Scramble

Susanville, California, United States

20 Jun, 2026 (Sat)

$60.00 - $80.00

Trail running

22K 14K 7K

The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)

Castro Valley, California, United States

26 Jun, 2026 (Fri) – 29 Jun, 2026

$45.00 - $100.00

Running, Trail running

5K 10K Half-Marathon +2

Strides in Recovery Hike to the Hollywood Sign

Los Angeles, California, United States

28 Jun, 2026 (Sun)

Free

Trail running

8K

San Lorenzo River Trail Run

Santa Cruz, California, United States

11 Jul, 2026 (Sat)

Free - $90.00

Trail running, Running

10.1K Half-Marathon 30K Marathon +3

5AM Crew 5PM Group Hike

Mt Baldy, California, United States

11 Jul, 2026 (Sat)

$25.00

Trail running

5K

SAR Wild Run

Shaver Lake, California, United States

09 Aug, 2026 (Sun)

$52.50 - $87.50

Trail running

Half-Marathon 10K 5K 3.2K

Redwood (Summer) Trail Run

Oakland, California, United States

15 Aug, 2026 (Sat)

Free - $90.00

Trail running, Running

8K Half-Marathon 30K Marathon +2

Santa Cruz Trail Run

Felton, California, United States

22 Aug, 2026 (Sat)

Trail running

29.3K Half-Marathon 10K

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

Colby Mountain Trailfest

Butte Meadows, California, United States

05 Sep, 2026 (Sat)

$40.00 - $70.00

Trail running

5K 12.1K 24.1K