Peter Robins, his website

The Roads to Santiago - Route Details

Via Gallia Belgica
Hélécine-Maubeuge-St Quentin

222km (approx)
links Hélécine south of Tienen with the GR655 at St Quentin via Nivelles and Maubeuge. A guidebook is available from Sentiers de Grande Randonnée.
Hélécine can be linked with Aachen and Maastricht with the GR128, which is based on the Niederstrasse; guidebook from Grote Routepaden.