GR®36, the Tarn Crossing from North to South Saint-Martin-Laguépie Description This 232km trail offers hikers a formidable walk through Tarn’s patchwork landscapes. Prices & payment Free access. Location GR®36, the Tarn Crossing from North to South Place de la Mairie, 81170 Saint-Martin-Laguépie Itinéraire Distance : 232km GR®36, the Tarn Crossing from North to South Place de la Mairie81170 Saint-Martin-Laguépie Tel. 05 63 47 73 06 E-mail Website Add to favorites Remove from favorites Route & access