Apr 19, 2013 - 2:17 AM
Switzerland is a very vertical country. Therefore, it is not the distance that matters but the vertical ascent. It is quite a different matter to hike 15 km on flat vs elevation gain of 500, 100, or 1500 meters. Please advise as to your hiking experience with elevation gain AND at altitude.
Prior to your reply, I will say that the hike from Meiringen to Grosse Scheidegg is one of the most spectacular in the region and one of my all time favorites (16 times in the region). It is about 16 km and 1350 meters of vertical ascent. Can be assisted by bus transfer as several points along the way. Schwarzwaldalp is about 300 meters lower than GS so a bit easier to reach.
Also, based on your description it sounds as though you are planning to hike from Schwarzwaldalp to Grindelwald, which usually encompasses the short uphill from S'alp to Grosse Scheidegg then the very long downhill (over 1400 meters) to Grindelwald. That's a recipe for beating up your knees, there are much better alternatives.