There are
2,757 mi
from Allentown, PA to Klamath Falls, OR
That's the driving distance. It would take 2 days 2 hours to go from Allentown, Pennsylvania to Klamath Falls, Oregon.
The flight distance (direct flight from Allentown, PA to Klamath Falls, OR) is 2,371.43 mi.
2,757 mi = 3.22 kms