There are
1,747 mi
from Napa, CA to Plano, TX
That's the driving distance. It would take 1 day 6 hours to go from Napa, California to Plano, Texas.
The flight distance (direct flight from Napa, CA to Plano, TX) is 1,477.51 mi.
1,747 mi = 2,811.61 kms