There are
1,645 mi
from Upland, CA to Sulphur, LA
That's the driving distance. It would take 1 day 4 hours to go from Upland, California to Sulphur, Louisiana.
The flight distance (direct flight from Upland, CA to Sulphur, LA) is 1,440.80 mi.
1,645 mi = 1.61 kms