There are
1,833 mi
from Waterloo, IA to Klamath Falls, OR
That's the driving distance. It would take 1 day 9 hours to go from Waterloo, Iowa to Klamath Falls, Oregon.
The flight distance (direct flight from Waterloo, IA to Klamath Falls, OR) is 1,495.54 mi.
1,833 mi = 2,949.92 kms