Ultramarathons Near San Francisco, CA
As of October 6, 2026, Crewable lists 19 upcoming ultramarathons near San Francisco, CA from October 2026 to August 2027. The next is Sonoma Fall Classic on October 17 in Healdsburg, CA. Registration is open for 4.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
1 raceNovember 2026
3 racesDecember 2026
3 racesJanuary 2027
1 raceFebruary 2027
2 racesMarch 2027
2 racesApril 2027
1 raceMay 2027
4 racesJune 2027
1 raceAugust 2027
1 raceQuick answers
What is the next ultramarathon near San Francisco, CA?
Sonoma Fall Classic, on Saturday, October 17, 2026, in Healdsburg, CA. Distances: 100 mi, 50 mi, Marathon.
What is the closest ultramarathon to San Francisco?
Hunter S. Thompson Fear & Loathing in San Francisco, CA, about 2 miles from San Francisco, on December 6, 2026.
How many ultramarathons near San Francisco, CA have open registration?
4 of the 19 list registration as open as of October 6, 2026, including Sonoma Fall Classic, Lake Chabot Trail Run and Quad Dipsea.
What is the busiest month for ultramarathons near San Francisco, CA?
May 2027, with 4 of the 19. November 2026 follows with 3.
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