There are
2,027 mi
from Naperville, IL to Klamath Falls, OR
That's the driving distance. It would take 1 day 12 hours to go from Naperville, Illinois to Klamath Falls, Oregon.
The flight distance (direct flight from Naperville, IL to Klamath Falls, OR) is 1,715.83 mi.
2,027 mi = 3.22 kms