There are
2,669 mi
from Wilmington, DE to Upland, CA
That's the driving distance. It would take 1 day 23 hours to go from Wilmington, Delaware to Upland, California.
The flight distance (direct flight from Wilmington, DE to Upland, CA) is 2,336.31 mi.
2,669 mi = 4,295.91 kms