There are
715 mi
from Upland, CA to Klamath Falls, OR
That's the driving distance. It would take 13 hours 13 mins to go from Upland, California to Klamath Falls, Oregon.
The flight distance (direct flight from Upland, CA to Klamath Falls, OR) is 604.59 mi.
715 mi = 1,150.18 kms