There are
2,290 mi
from Napa, CA to Seymour, IN
That's the driving distance. It would take 1 day 15 hours to go from Napa, California to Seymour, Indiana.
The flight distance (direct flight from Napa, CA to Seymour, IN) is 1,952.42 mi.
2,290 mi = 3.22 kms