This hike is detailed day by day on Visorando (circular route around the Sunniggrat Hütte). Day 1 is spent ascending to the Sünniggrat, with an overnight stay at the Sunniggrat Hütte. The return journey goes via the Leutschach Hütte and partly follows the ascent route but offers beautiful panoramic views along a section of the trail that runs along a ledge. (on Visorando: Arnisee–Sünniggrathütte)
By car: watch out for traffic jams, which can sometimes start before Intschi, or even before Amsteg on the climb up the Gotthard Pass.
Paid car park opposite the cable car in Intschi (coins required)
Take the cable car both ways to go up to Arnisee