The Giro dei Quattro Passi, also known as the Sellaronda, is a famous cycling route in the Italian Dolomites that traverses four mountain passes: Passo Sella, Passo Gardena, Passo Campolongo, and Passo Pordoi. This circular route, approximately 52 km long, crosses the provinces of Trento, Bolzano, and Belluno. It is highly appreciated for its scenic beauty, technical challenges, and the opportunity to tackle four significant climbs in a single day. Cyclists can ride the loop in either a clockwise or counterclockwise direction, enjoying breathtaking views and a unique sporting experience in the heart of the Dolomites.