Miles between Philadelphia, PA and Thornton, CO

There are
1,740 mi
from Philadelphia, PA to Thornton, CO

That's the driving distance. It would take 1 day 7 hours to go from Philadelphia, Pennsylvania to Thornton, Colorado.

The flight distance (direct flight from Philadelphia, PA to Thornton, CO) is 1,572.35 mi.

1,740 mi = 1.61 kms