Register now for the 2019 Julian Station Full Moon 12/24 hour run.
Registration is free and is open to SURF members only!
Welcome to San Diego Ultra Running Friends (S.U.R.F.)! We are THE resource for ultra running and trail running in San Diego. SURF is a non-profit organization committed to serving the needs of the San Diego trail and ultra running community. SURF is dedicated to fostering positive growth in the community through education, athlete engagement, local race support, and trail maintenance.