Hi there! Want to go on a relaxing bicycle ride? Critical Mass is for everyone. Usually there are a few thousand cyclists exploring the city together. It is not organised, just go with the flow. Bicycles can be lend via Stadtrad-App. Lost track? Use Critical Maps App to follow the crowd in Hamburg (and globally) Meeting at Alter Elbpark (U-Bahn Station St. Pauli) at around 19.00, start at 19.30