There are
766 mi
from Temecula, CA to Klamath Falls, OR
That's the driving distance. It would take 14 hours 11 mins to go from Temecula, California to Klamath Falls, Oregon.
The flight distance (direct flight from Temecula, CA to Klamath Falls, OR) is 653.82 mi.
766 mi = 1,232.55 kms