There are
1,730 mi
from Napa, CA to Grapevine, TX
That's the driving distance. It would take 1 day 6 hours to go from Napa, California to Grapevine, Texas.
The flight distance (direct flight from Napa, CA to Grapevine, TX) is 1,459.27 mi.
1,730 mi = 1.61 kms