There are
2,658 mi
from Allentown, PA to Yucaipa, CA
That's the driving distance. It would take 1 day 23 hours to go from Allentown, Pennsylvania to Yucaipa, California.
The flight distance (direct flight from Allentown, PA to Yucaipa, CA) is 2,305.92 mi.
2,658 mi = 3.22 kms