Nov 6, 2016 - 4:53 PM
in reply to jackdebear
If you are referring to the classic Via Alpina route (over the highest passes including Sefinenfurge, Hohturli, Bundechrinde, etc) I would not attempt this until July, preferably mid July or later. Even the lower elevation (comparatively speaking) walks in the areas near the classic routing such as Mannlichen to Kleine Scheidegg, First to Bachalpsee, and Schynige Platte to First often don't open until June 15. Sometimes later if the winter season has come with deep snow and/or there are late storms.
We did the entire route (Sargans to Montreux) in August 2013 and did not encounter snow but heard that some of the passes still had some snow on them in July.