The route
Napa and Sonoma offer a 156-mile, three-day touring route through vineyard valleys, mountain roads and Russian River country. The verified sequence removes the inherited backtracking and crosses the Mayacamas once, from Napa to Sonoma, before continuing north through Healdsburg and Geyserville to Guerneville.
The first stage follows Silverado Trail, reaches Oakville, then crosses Oakville Grade and Trinity Road to Glen Ellen and Sonoma. Day two moves through Sebastopol and Westside Road to Healdsburg, followed by a separate Alexander Valley stage to Geyserville. The final stage uses Dry Creek Road, the main Healdsburg approach and River Road to finish in Guerneville.
Wine-country roads can be narrow, busy and affected by weather, fire operations or local closures. Check Caltrans plus Napa and Sonoma county road information before every stage. Never combine tasting with driving. Arrange a non-drinking driver or professional transport for every winery visit.





