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Trail Races & Ultramarathons in California

As of October 6, 2026, Crewable lists 163 upcoming trail races and ultramarathons in California from October 2026 to September 2027. The next is HOKA Kodiak Ultra Marathons by UTMB on October 8 in Big Bear Lake. Registration is open for 44. 5 advertise prize money.

Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites

With aid station data

Bizz Johnson
2 aid

in 5 days

Bizz Johnson

Susanville, CA
50KMarathon+2
Open until Oct 9from $85
Silver Moon Race1 aid

in 6 months

Silver Moon Race

Reedley, CA
100 mi24 hr+5
from $70

Race calendar

October 2026

46 races

  11. Bizz Johnson

    Susanville, CA
    50KMarathon+2
    Open until Oct 9from $85

  36. No Name Trail Races

    Agoura, CA4,416 ft gain
    50KHalf Marathon+1$500 purse
    Open until Oct 23from $65

  39. The Rubicon

    Oxbow Reservoir, CA19,300 ft gain
    Closes Oct 22

November 2026

24 races

  13. Live Oak Odyssey

    Trabuco Canyon, CA523 ft gain
    8 hr6 hr+1
    Open until Nov 9from $95

  20. LA Turkey Trail

    Los Angeles, CA2,323 ft gain
    Half Marathon10K+1$1,000 purse
    Open until Nov 25from $83

  24. Quad Dipsea

    Mill Valley, CA
    28.4 mi
    Registration open

December 2026

17 races

  10. Doomsday

    Cool, CA
    50KHalf Marathon

January 2027

11 races

February 2027

8 races

  4. The Ranch 50k

    Escondido, CA6,318 ft gain
    50KHalf Marathon
    Registration open

March 2027

14 races

  8. The Big Alta

    Marinwood, CA
    50K
    Open until Mar 14, 2027from $160

April 2027

15 races

May 2027

11 races

June 2027

8 races

July 2027

6 races

  2. Iron X

    Auburn, CA
    Half Marathon

August 2027

1 race

September 2027

2 races

Quick answers

What is the next trail race or ultramarathon in California?

HOKA Kodiak Ultra Marathons by UTMB, on Thursday, October 8, 2026, in Big Bear Lake. Distances: 100 mi, 100K, 50K.

How many trail races and ultramarathons in California have open registration?

44 of the 163 list registration as open as of October 6, 2026, including Granite Head Trails and Ales, Rancho Cuyamaca State Park and Ridge Creek Run Club 12 Hour Ultra.

Which trail races and ultramarathons in California offer prize money?

5 races advertise prize money, including Machete Muertos 200 ($3,000), LA Turkey Trail ($1,000) and No Name Trail Races ($500).

How many of the trail races in California are ultramarathons?

107 of the 163 are ultramarathons (longer than a marathon, or a backyard, timed or 200+ mile format). The other 56 are shorter races.

What is the busiest month for trail races and ultramarathons in California?

October 2026, with 46 of the 163. November 2026 follows with 24.

Cities in California

San Francisco35Los Angeles39San Diego37Sacramento54Lake Tahoe46Auburn34Mammoth Lakes11

Neighboring states

Arizona58Nevada24Oregon46

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