There are
1,533 mi
from Lakewood, CO to St Marys, PA
That's the driving distance. It would take 1 day 3 hours to go from Lakewood, Colorado to St Marys, Pennsylvania.
The flight distance (direct flight from Lakewood, CO to St Marys, PA) is 1,392.47 mi.
1,533 mi = 1.61 kms