Miles between Reading, PA and Thornton, CO

There are
1,688 mi
from Reading, PA to Thornton, CO

That's the driving distance. It would take 1 day 6 hours to go from Reading, Pennsylvania to Thornton, Colorado.

The flight distance (direct flight from Reading, PA to Thornton, CO) is 1,528.43 mi.

1,688 mi = 1.61 kms