Miles between Thornton, CO and Grafton, WI

There are
1,060 mi
from Thornton, CO to Grafton, WI

That's the driving distance. It would take 18 hours 51 mins to go from Thornton, Colorado to Grafton, Wisconsin.

The flight distance (direct flight from Thornton, CO to Grafton, WI) is 909.35 mi.

1,060 mi = 1.61 kms