There are
2,890 mi
from Ridgewood, NJ to Danville, CA
That's the driving distance. It would take 2 days 2 hours to go from Ridgewood, New Jersey to Danville, California.
The flight distance (direct flight from Ridgewood, NJ to Danville, CA) is 2,533.79 mi.
2,890 mi = 4,650.93 kms