There are
634 mi
from Temecula, CA to Shasta Lake, CA
That's the driving distance. It would take 11 hours 40 mins to go from Temecula, California to Shasta Lake, California.
The flight distance (direct flight from Temecula, CA to Shasta Lake, CA) is 573.70 mi.
634 mi = 1,020.48 kms