Miles between Thornton, CO and Gresham, OR

There are
1,222 mi
from Thornton, CO to Gresham, OR

That's the driving distance. It would take 20 hours 59 mins to go from Thornton, Colorado to Gresham, Oregon.

The flight distance (direct flight from Thornton, CO to Gresham, OR) is 965.72 mi.

1,222 mi = 1.61 kms