Miles between Reading, PA and Castle Rock, CO

There are
1,660 mi
from Reading, PA to Castle Rock, CO

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

The flight distance (direct flight from Reading, PA to Castle Rock, CO) is 1,529.05 mi.

1,660 mi = 1.61 kms