In December 2015 I plan to go do Panama then go back into Costa Rica probably by foot, meaning taking a bus or boat on both sides of the border then crossing by foot. I heard there is a $40 exit tax ...
For walking/biking (or driving) from Mexico to Lima, Perú, the ferries in the Caribbean from Panama to Colombia add a lot of distance. Could save a lot of road if I could go on the Pacific side. ...