Miles between Allentown, PA and Castle Rock, CO

There are
1,681 mi
from Allentown, PA to Castle Rock, CO

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

The flight distance (direct flight from Allentown, PA to Castle Rock, CO) is 1,549.64 mi.

1,681 mi = 1.61 kms