From-http://www.letour.fr/2008/TDF/COURSE/us/index.html

Running from Saturday July 5th to Sunday July 27th 2008, the 95th Tour de France will be made up of 21 stages and will cover a total distance of 3,500 kilometres.

These 21 stages have the following profiles:

10 flat stages,
5 mountain stages,
4 medium mountain stages,
2 individual time-trial stages.
Distinctive aspects of the race

4 mountain finishes,
2 rest days,
82 kilometres of individual time-trials,
17 Category 1, Category 2 and highest level passes will be climbed