As far as hiking in Grand Teton, there are plenty of gentle trails. Colter Bay has a couple to Swan Ponds and Heron Ponds and also to Hermitage Point. They start down by the marina and the Swan Ponds hike is only about two miles. Hermitage Point is about 4-5 miles, but very gentle. Jenny Lake to Hidden Falls and Inspiration Point is a very gentle hike from the visitor center and is beautiful. Also, the Laurance(sp) Rockefeller Reserve, off the Moose/Wilson Road is the newest part of Grant Teton and is a very gentle hike to Phelps Lake where the Rockefeller compound was located which you can no longer see as they took over 30 buildings out before opening up the reserve. You don't have to climb mountains to hike in Grand Teton, unless you want to do so.
