421. Route 121 is from:
(a) Route 37 near Sears Point to Route 29 near Napa.
(b) Route 29 in Napa to Route 128.
Entire route.
Route 121 from:
(a) Route 37 near Sears Point to Route 12 near Sonoma.
(b) Route 221 near Napa State Hospital to near the vicinity of
Trancas Street in northeast Napa.
This route finds its way around Napa on the Silverado Trail.
The Silverado Country Club Resort is found along the way in Vichy Springs (Napa County).
Here's a link to information about the famous Napa Valley, even though this route doesn't
go there. Take a look!
California State Highways (Pull-down)
California State Highways (Tables)
The Main Page