The Poconos is a good place to go for outdoor activities not too far from Philadelphia or New York. I’ve been meaning to hike the Pinchot trail. There’s a few different loops you can do there. I’ve marked the trailhead parking lot and you can go from there.
To make it a full weekend, why not do one day of hiking and a second day of biking or kayaking? There’s plenty of places to rent bikes and boats in the area. Have fun!
Pocono Mountains Tourist Information