Miles between Thornton, CO and Greenfield, WI

There are
1,029 mi
from Thornton, CO to Greenfield, WI

That's the driving distance. It would take 18 hours 10 mins to go from Thornton, Colorado to Greenfield, Wisconsin.

The flight distance (direct flight from Thornton, CO to Greenfield, WI) is 902.67 mi.

1,029 mi = 1.61 kms