I have taken clients to Mendocino County, just north of Sonoma County. This really means, though there are wineries along Highway 101 toward Ukiah, the Anderson Valley. This small AVA is known for exceptional Pinot Noirs and Chardonnays, as well as increasingly, white wines, such as Riesling and Gewurztraminer, whose grapes cannot be grown successfully elsewhere in the wine country because of climate conditions. However, given distance and certain logistical conditions, even departures from Healdsburg northward make for a challenging day. An overnight stay would beckon us to an awesome redwood forest experience and a visit to the Pacific Coast.
Other areas which clearly are beyond a day’s drive include Lodi, due east of the Napa-Sonoma wine country, but with more total acres under vine than both areas; and much to the south beyond Monterey, Paso Robles increasingly respected for both Cab and Pinot; Paso being fostered by the wine industry icon, Andre Tchelistcheff. I’ve been to Lodi (named after hometown of Italian immigrant farmers) and to Paso as a visitor, and would be excited to guide and drive you to either; or plan your visit on a concierge basis.