There are
2,685 mi
from Santa Clarita, CA to Allentown, PA
That's the driving distance. It would take 2 days to go from Santa Clarita, California to Allentown, Pennsylvania.
The flight distance (direct flight from Santa Clarita, CA to Allentown, PA) is 2,374.61 mi.
2,685 mi = 4,320.87 kms