Milan-San Remo is the longest one-day race on the professional cycling calendar; the 2015 edition was in length. It began in the city of Milan, on the Via della Chiesa Rossa. From Milan, the first part of the route was almost entirely flat, as the course passed through the provinces of Milan, Pavia and Alessandria. There were no significant climbs in the first . As they entered the province of Genoa, the riders climbed the Passo del Turchino, a long and gentle climb with no significant difficulty. The descent, however, was twisting, giving an advantage to the riders who were towards the front of the peloton. The next were again generally flat. This part of the course, in the province of Savona, took the riders along the Mediterranean coast.