Miles between Napa, CA and Signal Hill, CA

There are
421 mi
from Napa, CA to Signal Hill, CA

That's the driving distance. It would take 7 hours 53 mins to go from Napa, California to Signal Hill, California.

The flight distance (direct flight from Napa, CA to Signal Hill, CA) is 387.10 mi.

421 mi = 678.24 kms