1 - Gemmiweg Sunnbüel - Schwarenbach

As the only known Alpine pass in Switzerland, the historic path from Gemmipass to Sunnbüel is also walkable on foot in winter.  On well-prepared wide paths, normal hiking boots are sufficient to cross the pass. 

For your safety, the hike is divided into two sections in winter. Depending on weather and snow conditions, the two parts can be differently open. Here is the link to section

2 - Gemmiweg Schwarenbach - Gemmipass