was within two minutes of each other. In the nineteenth stage, San Miguel lost a little time on Vanspringel, who became the new leader. The next few stages did not change anything in the top of the general classification. The Tour ended with a time trial, and before the time trial, Herman Van Springel was leading, followed by San Miguel at 12 seconds, Janssen at 16 seconds and Bitossi at 58 seconds. Janssen won the final time trial, with Van Springel in second place, but the margin was large enough for Janssen to win the Tour. Doping Doping controls were performed daily on the first three riders to complete the stage and three more riders by random drawing. Gimondi advised the Tour de France organizers adopt the aforementioned system, which was used at the Giro d'Italia earlier that year, in order for him to agree to participate in the race. In total, 163 doping tests were performed. Two returned positive: José Samyn, after the sixth stage Jean Stablinski, after the eleventh stage, for amphetamines Both were removed from the race, suspended for one month and given a fine. Classification leadership and minor prizes There were several classifications in the 1968 Tour de France, two of them awarding jerseys to their leaders. The most important was the general classification, calculated by adding each cyclist's finishing times on each stage. The cyclist with the least accumulated time was the race leader, identified by the yellow jersey; the winner of this classification is considered the winner of the Tour. Additionally, there was a points classification. In the points classification, cyclists got points for finishing among the best in a stage finish, or in intermediate sprints. The cyclist with the most points lead the classification. The jersey for the points classification leader was red in 1968, unlike all other years since its introduction in 1953, when it was green. There was also a mountains classification. The organisation had categorised some climbs as either first, second, third, or fourth-category; points for this classification were won by the first cyclists that reached the top of these climbs first, with more points available for the higher-categorised climbs. The cyclist with the most points lead the classification. The leader of the mountains classification, which had been calculated since 1933 but had never had a jersey, also became identifiable by a "macaron" on his jersey. A newly introduced classification