There are
355 mi
from Yakima, WA to Klamath Falls, OR
That's the driving distance. It would take 7 hours 28 mins to go from Yakima, Washington to Klamath Falls, Oregon.
The flight distance (direct flight from Yakima, WA to Klamath Falls, OR) is 308.91 mi.
355 mi = 571.35 kms