Marathons in California
As of October 6, 2026, Crewable lists 27 upcoming marathons in California from October 2026 to May 2027. The next is Ruth Anderson Memorial Endurance Run on October 10 in San Francisco. Registration is open for 10.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
21 aid
2 aidin 18 days
Trail Run at Sly Park - Fall
Pollock Pines, CA5,000 ft gain
50KMarathon+5
Closes Oct 24from $55
6 aid
in 26 days
Mount Laguna Trail Marathon
Mount Laguna, CA3,358 ft gain
Marathon
Open until Oct 15from $120
6 aid
4 aidin 11 days
The Peak 50K, Marathon & Half Marathon
Julian, CA10,000 ft gain
50KMarathon+1
Open until Oct 15from $115
Race calendar
October 2026
8 races2026 Humboldt Redwoods Marathon, Half Marathon, 5K
Weott, CAMarathonHalf Marathon+1Open until Oct 11from $60The Peak 50K, Marathon & Half Marathon
Julian, CA10,000 ft gain50KMarathon+1Open until Oct 15from $115
November 2026
5 racesDecember 2026
3 racesJanuary 2027
4 racesFebruary 2027
1 raceMarch 2027
2 racesApril 2027
1 raceMay 2027
3 racesQuick answers
What is the next marathon in California?
Ruth Anderson Memorial Endurance Run, on Saturday, October 10, 2026, in San Francisco. Distances: Marathon.
How many marathons in California have open registration?
10 of the 27 list registration as open as of October 6, 2026, including 2026 Humboldt Redwoods Marathon, Half Marathon, 5K, Bizz Johnson and Sonoma Fall Classic.
What is the busiest month for marathons in California?
October 2026, with 8 of the 27. November 2026 follows with 5.
Cities in California
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