There are
1,115 mi
from Temecula, CA to Lewiston, ID
That's the driving distance. It would take 21 hours 31 mins to go from Temecula, California to Lewiston, Idaho.
The flight distance (direct flight from Temecula, CA to Lewiston, ID) is 891.81 mi.
1,115 mi = 1.61 kms