This weekend all the pro's here in Europa did the famous cycling classic: Paris - Roubaix. The race is better known as "Hell of the North" and famous for its cobble sectors (31 sectors, more than 50km in total). Racing distance this weekend was 258km.
You can watch an impressive impression here: http://www.youtube.com/watch?v=3QSpuhIQg1A
Please watch carefully at sec. 48/49. This is the Norwegian Kurt Asle Arvesen whom rode the last 20km without his saddle(!). Very impressive feature.