Runners start the Napa to Sonoma Wine Country Half Marathon course near the city of Napa at the Cuvaison Carneros Estate on Duhig Road, just off California Highway 121. From there, the race follows a winding path along Duhig to Ramal Road, and then up the affectionaly named “Butt Burner Hill” and downhill into the Carneros wine country, where runners get to take in the beautiful vistas of the Napa-Sonoma Marshes Wildlife Area, the San Pablo Bay and the hills of Marin County.
Note: The course map above provides the approximate route for the race. Though every effort has been made to ensure its accuracy, changes are sometimes made to race routes due to weather conditions, road closures or other circumstances that can require a course to be changed. If you see an error above, email us here.