CITY CYCLING is a campaign developed according to the Nuremberg model by Climate Alliance, which is the largest network of cities, municipalities and rural districts committed to protecting the world’s climate with some 1,700 members in 26 European countries. The campaign offers municipalities tried-and-tested, easy-to-implement measures to advocate sustainable mobility (more) actively through marketing/PR activities. Local politicians, school classes, clubs, companies and local inhabitants team up to promote cycling, raise awareness for climate protection and improve their quality of life. On 21 consecutive days between 1 May and 30 September, as many kilometres as possible should be covered by bike for professional and private purposes with zero emissions. Municipalities are free to decide when they wish to run the campaign.