There are
2,726 mi
from Simi Valley, CA to Wilmington, DE
That's the driving distance. It would take 2 days 1 hour to go from Simi Valley, California to Wilmington, Delaware.
The flight distance (direct flight from Simi Valley, CA to Wilmington, DE) is 2,391.86 mi.
2,726 mi = 3.22 kms