Ultra races in California, United States — 2026 running calendar

Shaver Lake Mile High Triathlon

Shaver Lake, California, United States

13 Sep, 2026 (Sun)

$55.00 - $340.00

Triathlon, Aquabike, Swimrun, Duathlon, Running

23.7K 48.4K 18.7K 5.3K +12

Mile Madness Endurance Run

Auburn, California, United States

18 Sep, 2026 (Fri) – 21 Sep, 2026

$129.00 - $449.00

Running

Ultra +4

Hill Valley 88 Miler ™

Hill Valley, California, United States

23 Sep, 2026 (Wed) – 21 Oct, 2026

$15.00 - $88.00

Running, Walking

Ultra 1.6K 0.8K 0.4K +1

Ruth Anderson Memorial Endurance Run

San Francisco, California, United States

10 Oct, 2026 (Sat)

Free

Trail running, Running

Ultra 7.2K

Bizz Johnson

Susanville, California, United States

11 Oct, 2026 (Sun)

$65.00 - $100.00

Running

Ultra Half-Marathon 10K

Lake Hodges Trail Festival

San Diego, California, United States

17 Oct, 2026 (Sat) – 18 Oct, 2026

$15.00 - $130.00

Trail running, Running, Duathlon

50K 25.1K 15K 10.3K +7

Lake Evans Triathlon, 5k & 10k

Bakersfield, California, United States

18 Oct, 2026 (Sun)

$45.00 - $230.00

Triathlon, Aquabike, Swimrun, Duathlon, Running

23.7K 48.4K 18.7K 5.3K +12

2026 Cal Tri LA - 10.18.26

Playa Del Rey, California, United States

18 Oct, 2026 (Sun)

Free - $153.86

Triathlon, Running, Swimming

Ultra 5K 1.5K 10K +1

Finish The Ride and Finish The Run Santa Clarita

Valencia, California, United States

25 Oct, 2026 (Sun)

$10.00 - $95.00

Running, Cycling

1K 5K 10K 19.3K +2

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Newport Beach, California, United States

01 Nov, 2026 (Sun)

$43.86 - $153.86

Triathlon, Running, Swimming

Ultra 4.8K 1.5K 9.7K

Lake Chabot Trail Run

Castro Valley, California, United States

07 Nov, 2026 (Sat)

Free - $90.00

Trail running, Running

7.7K Half-Marathon 30K Marathon +4

San Joaquin River Trail 10k/25k/50k

Friant, California, United States

05 Dec, 2026 (Sat)

$50.00 - $140.00

Running

Ultra 25K 10K