Hi

There is a meetup group for mtb with members all around Zurich. They organise very regular rides all around the area.

http://www.meetup.com/SwissAlpineAdventure/


I also mtb in the area of Greifensee and Pfannensteil very regularly and would be happy to hook up for a few rides either evenings or weekends. I too am pretty slow. Just let me know.