Ultramarathon Races in San Jose
Find Ultramarathon running races in San Jose. Browse upcoming ultramarathon events, registration details, and race information for 2026.
6 races found
Sierra Azul Trail Challenge
Sierra Azul Trail Challenge is a 50 km ultra trail race held in San Jose, CA. The event takes place in April 2026.
Costa Rica 200
Costa Rica 200 is a 322 km ultramarathon trail race held in San Jose. The event takes place in April 2026.
Hacienda Hills Trail Run - Spring
Hacienda Hills Trail Run - Spring is a 50 km ultra trail race held in San Jose, CA. The event takes place in May 2026.
Quicksilver Endurance Runs
Quicksilver Endurance Runs is a 100 km ultramarathon trail race held in San Jose, CA. The event takes place in May 2026.
Calero Trail Run - Spring
Calero Trail Run - Spring is a 50 km ultra trail race held in San Jose, CA. The event takes place in May 2026.
Almaden Hills Trail Run - Summer
Almaden Hills Trail Run - Summer is a 50 km ultra trail race held in San Jose, CA. The event takes place in August 2026.