There are
2,728 mi
from Wilmington, DE to San Clemente, CA
That's the driving distance. It would take 2 days 1 hour to go from Wilmington, Delaware to San Clemente, California.
The flight distance (direct flight from Wilmington, DE to San Clemente, CA) is 2,352.20 mi.
2,728 mi = 3.22 kms