Forêt de Soignes is a 10,000+ acre wooded area, just south of Bois de Cambre and ~4 miles south of the center of Brussels. There is a vast number of trails, so there are many jogging options. Some trails are more rugged, and there are also straight alées through rows of beech trees. There are also marked 5k (green), 10k (blue), and 20k (red) loops, all visible from a panel at the ADEPS Center (sports center). There are wonderful sporting facilities in the park, as well. Showers available at ADEPS for a modest fee.