Mileage calculator › From Napa, CA › Miles from Napa, CA to Roy, UT
There are 738 mifrom Napa, CA to Roy, UT
That's the driving distance. It would take 12 hours 39 mins to go from Napa, California to Roy, Utah.
The flight distance (direct flight from Napa, CA to Roy, UT) is 580 mi.
738 mi = 1,187.35 kms