From the Lanser Alm, take the forest road to the north and follow the signs to Lans, Sistrans and the Sistranser Alm mountain hut. At the first sharp left-hand bend, the route continues straight on to the Sistranser Alm mountain hut (1608 m). From the Sistranser Alm, follow the forest road that leads gradually downhill for about half a kilometre until you arrive at the first intersection. From there, continue straight on towards the Aldranser Alm mountain hut (1511 m) and Hirschlacke. Then take the narrow mountain path leading northeast and follow signs to the Rinner Alm mountain hut (1394 m). The last part of the hike leads along the forest road to the village of Rinn (921 m).
Read about this hike on the Innsbruck Blog