The best bang for your effort is Scenic GorgeTrail (red). Short sweet and aptly named. Of you want a real hike, gorgeous overlooks, and a great waterfall go with the Tumbling Waters Trail.
Worth a stop if you have little ones. Inside the center has a few exhibits and restrooms. more - https://adventuringforfamilies.com/2017/08/14/delaware-water-gap-east-stroudsburg-pa/
Where Learning Comes Naturally! With 6 hiking trails, weekend educational programs, and summer camp, PEEC is the perfect place for learning and exploring.