There are
2,278 mi
from Las Vegas, NV to St Marys, PA

That's the driving distance. It would take 1 day 16 hours to go from Las Vegas, Nevada to St Marys, Pennsylvania.

The flight distance (direct flight from Las Vegas, NV to St Marys, PA) is 1,991.51 mi.

2,278 mi = 3.22 kms