There are
2,673 mi
from Allentown, PA to Fontana, CA
That's the driving distance. It would take 1 day 23 hours to go from Allentown, Pennsylvania to Fontana, California.
The flight distance (direct flight from Allentown, PA to Fontana, CA) is 2,324.84 mi.
2,673 mi = 3.22 kms