There are
2,300 mi
from Gresham, OR to Weslaco, TX
That's the driving distance. It would take 1 day 18 hours to go from Gresham, Oregon to Weslaco, Texas.
The flight distance (direct flight from Gresham, OR to Weslaco, TX) is 1,898.46 mi.
2,300 mi = 3.22 kms