Miles between Ann Arbor, MI and Thornton, CO

There are
1,221 mi
from Ann Arbor, MI to Thornton, CO

That's the driving distance. It would take 21 hours 42 mins to go from Ann Arbor, Michigan to Thornton, Colorado.

The flight distance (direct flight from Ann Arbor, MI to Thornton, CO) is 1,115.26 mi.

1,221 mi = 1.61 kms