riders rather than clocking the riders during each stage. The race leader was calculated by adding up each rider's placings in each stage and the rider with the lowest total was the leader; if a rider placed second in the first stage and third in the second stage, he would have five points total. The system was modified a year later to give the riders who placed 51st or higher in a stage 51 points and keep the point distribution system the same for the riders who placed 1st through 50th in a stage. The calculation remained unmodified until 1912 where the organizers chose to have the race be centered around teams, while still keeping the point system. The next year race organizers chose to revert to the system used in 1911. In 1914, the organizers shifted to the system used nowadays, where riders would have their finishing times for each stage totaled together to determine the overall leader. These are the time bonuses that the riders receive for crossing the lines in the first few positions: Mountains classification The mountains classification is the second oldest jersey awarding classification in the Giro d'Italia. The mountains classification was added to the Giro d'Italia in 1933 Giro d'Italia and was first won by Alfredo Binda. During mountain stages of the race, points are awarded to the rider who is first to reach the top of each significant climb. Points are also awarded for riders who closely follow the leader up each climb. The number of points awarded varies according to the hill classification, which is determined by the steepness and length of the course. The climbers' jersey is worn by the rider who, at the start of each stage, has the largest number of climbing points. If a rider leads two or more of the categories, the climbers' jersey is worn by the rider in second, or third, place in that contest. At the end of the Giro, the rider holding the most climbing points wins the classification. In fact, some riders, particularly those who are neither sprinters nor particularly good at time-trialing, may attempt only to win this particular competition within the race. The Giro has four categories of mountains. They range from category 4, the easiest, to category 1, the hardest. There is also the Cima Coppi, the highest point reached in a particular Giro, which is worth more points