There are
1,009 mi
from Tustin, CA to Gresham, OR
That's the driving distance. It would take 19 hours 6 mins to go from Tustin, California to Gresham, Oregon.
The flight distance (direct flight from Tustin, CA to Gresham, OR) is 847.91 mi.
1,009 mi = 1.61 kms