The tour de france is getting shorter all the time, consider this:
2006 Floyd Landis 89h 39m 30s 3639K
2004 Lance Armstrong 83h 36m 02s 3391K
2002 Lance Armstrong 82h 05m 12s 3278K
1989 Greg LeMond 87h 38m 35s 3250K
1988 Pedro Delgado 84h 27m 53s 3300K
.. . . and then there were men
1931 Antonin Magne 177h 10m 3s 5095
1930 Andre Leducq 172h 12m 10s 4818
1929 Maurice De Waele 186h 39m 16s 5286
1928 Nicolas Frantz 192h 48m 58s 5377
1927 Nicolas Frantz 198h 16m 42s 5348
1926 Lucien Buysse Belgium 238h 44m 25s 5475
1925 Ottavio Bottecchia Italy 219h 10m 13s 5430
1924 Ottavio Bottecchia Italy 226h 18m 21s 5427
1923 Henri Pelissier France 222h 15m 30s 5386
1922 Firmin Lambot Belgium 222h 8m 6s 5378
1921 Leon Scieur Belgium 221h 50m 0s 5484
1920 Philippe Thys Belgium 228h 36m 0s 5503
1919 Firmin Lambot Belgium 231h 7m 15s 5560
* * * No Tour de France - World War I * * *
1914 Philippe Thys Belgium 200h 28m 49s 5414
1913 Philippe Thys Belgium 197h 54m 0s 5387
1912 Odile Defraye Belgium 184h 50m 0s 5229
1911 Gustave Garrigou France 195h 35m 25s 5544
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1911-1931 over 5000 K, around 200 hours
After that it dropped to 4200 K around 120 hours.
Now the modern era it's around 3300 K around 85 hours
So as equipment has evolved, and technology has improved, it seem the race
organizers have less confidence in the riders, as they make the race shorter
and shorter to meet the lower standards of the modern rider. The iron-men
of the 20's and 30's are long gone.