There are
2,851 mi
from Fremont, CA to Allentown, PA
That's the driving distance. It would take 2 days 2 hours to go from Fremont, California to Allentown, Pennsylvania.
The flight distance (direct flight from Fremont, CA to Allentown, PA) is 2,473.96 mi.
2,851 mi = 3.22 kms