There are
1,007 mi
from Gresham, OR to Upland, CA
That's the driving distance. It would take 19 hours 7 mins to go from Gresham, Oregon to Upland, California.
The flight distance (direct flight from Gresham, OR to Upland, CA) is 827.32 mi.
1,007 mi = 1.61 kms