There are
1,774 mi
from Napa, CA to Seagoville, TX
That's the driving distance. It would take 1 day 7 hours to go from Napa, California to Seagoville, Texas.
The flight distance (direct flight from Napa, CA to Seagoville, TX) is 1,495.99 mi.
1,774 mi = 1.61 kms