There are
2,505 mi
from Yakima, WA to St Marys, PA
That's the driving distance. It would take 1 day 20 hours to go from Yakima, Washington to St Marys, Pennsylvania.
The flight distance (direct flight from Yakima, WA to St Marys, PA) is 2,089.87 mi.
2,505 mi = 3.22 kms