Co-funded by CIVITAS MIMOSA, the edition of 2012 of the urban cycling contest saw seven European cities challenge each other. Nearly 1,200 participants cycled throughout May in their cities, leaving their cars in the garage, covering about 90,000 kms and saving about 10 tons of CO2. All their trips were tracked by GPS with the support of the Endomondo© free App. In line with the previous edition, the Challenge 2013 consists of a mileage challenge where groups of urban cyclists track their cycling trips they take to get around the city for a month. They quantify CO2-savings in comparison to their usual behaviour. If your city is interested to join this exciting experience, please complete the expression of interest available below by 31 December 2012. For more information, contact email@example.com. Follow us on Facebook (Bolognainbici) and Twitter (@Bolognainbici).