A Saturday ride with close to 30 people from the Happymtb.org forum, starting at Hammarbybacken in Stockholm, following Sörmlandsleden section 1-4 past Alby friluftsgård and Tyresta to Rudan in Haninge.. Great weather, probably one of the very last summer days.. Varied mix of trails with plenty of roots and stones, short sections on gravel or asphalt, some pretty steep and hilly sections, and a few really nice "rock surfs" with a nice flow.. We finished off with a with a nice BBQ in Rudan, a great day!