We drove to Linthal to the Braunwald Bahn. We took the funicular to Braunwald. Then we headed to the Kombibahn Gumen. It's about 1 km from the top station of the Braunwald Bahn. With the cable car we headed to Gumen. And then headed to the start of the route.
In some of the guides they recommended additional mobile protection. But Romys Traum is very well protected, and you need at least 12 quickdraws.