Miles between Lancaster, PA and Thornton, CO

There are
1,674 mi
from Lancaster, PA to Thornton, CO

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

The flight distance (direct flight from Lancaster, PA to Thornton, CO) is 1,511.75 mi.

1,674 mi = 2,693.78 kms