United States·2026

Vallejo, CA

Vallejo's running is mostly flat around the Mare Island strait and waterfront paths, with the Gold Rush Adventure Challenge offering a longer multisport option into the surrounding foothills. Cyclists benefit from immediate access to rolling terrain in the Napa and Sonoma hills just east—the After School MTB sessions tap into local singletrack, and the Rock the Ride Napa course pushes 40km through vineyard country with steady elevation gain. The Bay Area proximity means runners and riders often treat Vallejo as a jumping-off point rather than a destination, but the waterfront loop is solid for training miles.