Types of GR-paths
There are two types of paths: GR and Regional GR trails.
GR trails traverse several regions. They are numbered and marked with white and red stripes. While some remain within Flanders, others cross over into Wallonia or a neighbouring country.
Regional GRs, on the other hand, explore one region only. Instead of a number, they have a name and are marked with yellow and red stripes.
A 'Treinstapper' is a day hike from station to station on GR trails. The length of Treinstappers ranges from 18 to 27 km. Most routes can be shortened by catching a bus or train halfway.