There are
2,857 mi
from Allentown, PA to Grover Beach, CA
That's the driving distance. It would take 2 days 3 hours to go from Allentown, Pennsylvania to Grover Beach, California.
The flight distance (direct flight from Allentown, PA to Grover Beach, CA) is 2,463.52 mi.
2,857 mi = 3.22 kms