6 aidTrail Races & Ultramarathons Near San Diego, CA
As of October 6, 2026, Crewable lists 37 upcoming trail races and ultramarathons near San Diego, CA from October 2026 to July 2027. The next is Rancho Cuyamaca State Park on October 10 in Julian, CA. Registration is open for 13.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
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1 aidRace calendar
October 2026
10 racesThe Peak 50K, Marathon & Half Marathon
Julian, CA10,000 ft gain50KMarathon+1Open until Oct 15from $115
November 2026
7 racesDecember 2026
4 racesJanuary 2027
2 racesFebruary 2027
2 racesMarch 2027
3 racesApril 2027
2 racesMay 2027
3 racesJune 2027
1 raceJuly 2027
3 racesQuick answers
What is the next trail race or ultramarathon near San Diego, CA?
Rancho Cuyamaca State Park, on Saturday, October 10, 2026, in Julian, CA.
What is the closest trail race or ultramarathon to San Diego?
Lake Hodges Trail Festival in San Diego, CA, about 1 mile from San Diego, on October 17, 2026.
How many trail races and ultramarathons near San Diego, CA have open registration?
13 of the 37 list registration as open as of October 6, 2026, including Rancho Cuyamaca State Park, HIKE SANTA MARGARITA TRAIL and Lake Hodges Trail Festival.
How many of the trail races near San Diego, CA are ultramarathons?
27 of the 37 are ultramarathons (longer than a marathon, or a backyard, timed or 200+ mile format). The other 10 are shorter races.
What is the busiest month for trail races and ultramarathons near San Diego, CA?
October 2026, with 10 of the 37. November 2026 follows with 7.
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