There are
1,773 mi
from Gresham, OR to Leavenworth, KS
That's the driving distance. It would take 1 day 6 hours to go from Gresham, Oregon to Leavenworth, Kansas.
The flight distance (direct flight from Gresham, OR to Leavenworth, KS) is 1,458.85 mi.
1,773 mi = 1.61 kms