Starting at the Zoete Waters, first on the Blue Meerdael BLOSO. In Sint Joris Weert the connection is made to the Overijse BLOSO routes. The 3 routes are ridden in succesion and then the trail connects back to the Blue Meerdael BLOSO. This is the most hilly of the 3 Meerdael BLOSO routes. This route is followed back towards its end point near the Zoete Waters in Oud-Heverlee.
You can make this ride longer by including the Meerdael Red and even the Meerdael Green route. This last option would bring the total distance to almost 100km.