There are
2,686 mi
from Temecula, CA to Wilmington, DE
That's the driving distance. It would take 2 days to go from Temecula, California to Wilmington, Delaware.
The flight distance (direct flight from Temecula, CA to Wilmington, DE) is 2,325.78 mi.
2,686 mi = 4,323.01 kms