Jim Thorpe: a half hour away
Lake Nockamixon: a half hour away
Bethlehem: only 15 minutes away
Lancaster: an hour and a half away
Philadelphia: an hour and a half to downtown
New York City: an hour and a half via car or bus (https://transbridgelines.com/allentown-clinton-new-york)
New Jersey beaches: 2-2 1/2 hours. We recommend Belmar and Asbury Park for the day
Hershey: an hour and 15 minutes
Pocono Mountains: an hour
Gettysburg: two hours
Baltimore: two and a half hours
Washington, DC: three hours
Delaware Beaches: two hours and 45 minutes
Ocean City, MD: three hours and 20 minutes
Williamsburg, VA: five hours and 15 minutes