Tour de France part.1

The Tour de France is an annual multiple stage bicycle race primarily held in France, while also occasionally making passes through nearby countries. The race was first organized in 1903 to increase paper sales for the magazine L'Auto it is currently run by the Amaury Sport Organisation. The race has been held annually since its first edition in 1903 except for when it was stopped for the two World Wars. As the Tour gained prominence and popularity the race was lengthened and its reach began to extend around the globe. Participation expanded from a primarily French field, as riders from all over the world began to participate in the race each year. The Tour is a UCI World Tour event, which means that the teams that compete in the race are mostly UCI ProTeams, with the exception of the teams that the organizers invite.

Along with the Giro d'Italia and Vuelta a España, the Tour makes up cycling's prestigious, three-week-long Grand Tours. Traditionally, the race is usually held primarily in the month of July. While the route changes each year, the format of the race stays the same with the appearance of at least two time trials, the passage through the mountain chains of the Pyrenees and the Alps, and the finish on the Champs-Élysées. The modern editions of the Tour de France consist of 21 day-long segments (stages) over a 23-day period.

All of the stages are timed to the finish; after finishing the riders' times are compounded with their previous stage times. The rider with the lowest aggregate time is the leader of the race and gets to don the coveted yellow jersey. While the general classification garners the most attention there are other contests held within the Tour: the points classification for the sprinters, the mountains classification for the climbers with general classification hopes, young rider classification for the riders under the age of 26, and the team classification for the fastest teams. The 2012 edition of the race was won by Great Britain's Bradley Wiggins, the first British winner in the history of the Tour de France.

The tour typically has 21 days of racing and 2 rest days and covers 3,200 kilometres (2,000 mi). The shortest Tour was in 1904 at 2,420 kilometres, the longest in 1926 at 5,745 kilometres. The three weeks usually include two rest days, sometimes used to transport riders from a finish in one town to the start in another.The race alternates between clockwise and anticlockwise circuits of France. The first anticlockwise circuit was in 1913. The New York Times said the "Tour de France is arguably the most physiologically demanding of athletic events." The effort was compared to "running a marathon several days a week for nearly three weeks", while the total elevation of the climbs was compared to "climbing three Everests."

The number of teams usually varies between 20 and 22, with nine riders in each. Entry is by invitation to teams chosen by the race organiser, the Amaury Sport Organisation. Team members help each other and are followed by managers and mechanics in cars.

Riders are judged by the time each has taken throughout the race, a ranking known as the general classification. There may be time deductions for finishing well in a daily stage or being first to pass an intermediate point. It is possible to win without winning a stage; this has occurred six times. There are subsidiary competitions (see below), some with distinctive jerseys for the best rider. Riders normally start together each day, with the first over the line winning, but some days are ridden against the clock by individuals or teams. The overall winner is usually a master of the mountains and of these time trials.