Changes

Take Bus 11/21 until "Henkerbrünnli". Or walk: It's a 5-10 minutes walk from the train station. Walk in direction of Bollwerk/Schützenmatte or to the "Reithalle" (a big autonome building with a lot of Graffiti etc.). Cross the street behind the Reithalle and there's the beginning of ''Tiefenaustrasse'', which leads directly into the Neufeld tunnel and the motorway A1. There are many cars, but not too much space to stop (bike lane) and waiting times can be long. It nonetheless works. Use a sign because of local traffic. '''Option 6: Unterzollikofen'''  Take S9 from Bern Hauptbahnhof to the end stop (Unterzollikofen), then walk over the fields Eastwards to the rest area "Grauholz", it's not that far and probably pretty lovely between April and August due to the sunflower fields (been there in late September and it was still great). No controls in the S-Bahn. Take a picture from the map with your camera, might come handy. Best option fur sure! I didn't wait long for a hitch towards Zürich.