Grosbous sits in the heart of the Éislek — the loop crosses the mix of ridgelines, forest and open pasture typical of the country's north. At 8.4 km, the circuit takes roughly 2½ hours. The route gathers about 160 m of ascent, and most of the way follows forest and field tracks.
On small paths, the loop links the prettiest corners around the village. Like every Auto-Pédestre, the loop is permanently waymarked with the blue symbol and can be started at any point.
