Impress your friends with our selection of fascinating number-based facts and stats about the Tour de France

123,900
The approximate average number of calories burned by a rider during the Tour

21,125
The total elevation of the classified climbs in metres in this year’s Tour de France – they have an average gradient of 6.6 per cent

3,430
The length of the 2011 Tour de France in kilometres. That’s a breeze compared to the longest ever edition of the race – 5,745km in 1926

2,645
The altitude in metres of the Col du Galibier, where the 18th stage of this year’s Tour will finish. It’s the highest ever stage finish and also 100 years since the Galibier was first used in the Tour

1955
The last year there was only one individual time trial in the Tour

30.213
The average speed in miles per hour of the fastest road race stage ever in the Tour, from Laval to Blois in the 1999 Tour. Mario Cipollini won it

28-17
The larget post-war Tour winning margin, Fausto Coppi in the 1952 Tour

16
The records for the most Tours ever started (and finished) belonging to Joop Zoetemelk of Holland, who completed the 1970-73 and 1975-86 Tours. George Hincapie (BMC) will equal the record if he completes this year

10
The smallest number of finishers ever in a Tour de France. In 1919 – out of 69 who started

8
The highest number of different riders to wear the yellow jersey in one Tour (1987)

Tour de France 2011: Related links
Tour de France 2011: Cycling Weekly’s coverage index
Tour de France: The jerseys, what they are and what they mean
Potted history of the Tour de France
The closest Tours in history
Brits in the Tours: From Robinson to Wiggins

Halfords banner animated