There are
1,586 mi
from Upland, CA to Gladstone, MO
That's the driving distance. It would take 1 day 3 hours to go from Upland, California to Gladstone, Missouri.
The flight distance (direct flight from Upland, CA to Gladstone, MO) is 1,323.76 mi.
1,586 mi = 1.61 kms