Ultramarathons in California
As of October 6, 2026, Crewable lists 110 upcoming 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 28. 4 advertise prize money.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
1 aid
9 aid
9 aid
6 aidRace calendar
October 2026
25 racesThe Peak 50K, Marathon & Half Marathon
Julian, CA10,000 ft gain50KMarathon+1Open until Oct 15from $115
November 2026
12 racesDecember 2026
11 racesJanuary 2027
9 racesFebruary 2027
8 racesMarch 2027
11 racesApril 2027
12 racesMay 2027
10 racesJune 2027
6 racesJuly 2027
3 racesAugust 2027
1 raceSeptember 2027
2 racesQuick answers
What is the next 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 ultramarathons in California have open registration?
28 of the 110 list registration as open as of October 6, 2026, including Ridge Creek Run Club 12 Hour Ultra, Sunset & Cider Trail Races and Bizz Johnson.
Which ultramarathons in California offer prize money?
4 races advertise prize money, including Machete Muertos 200 ($3,000) and No Name Trail Races ($500).
What is the busiest month for ultramarathons in California?
October 2026, with 25 of the 110. November 2026 follows with 12.
Cities in California
Neighboring states
More ways to browse
Race planning
Plan your California race
Aid stations, cutoffs and pacing in one free plan. Crew invites and race-day updates come with a Race Pass.
Plan a race free