Originally, the race was from Paris to Roubaix, but in 1966 the starting location was moved to Chantilly, 50 kilometres to the north of Paris, to be moved in 1977 to Compiègne, approximately 80 kilometres to the north of Paris. Famous for rough terrain, the route of Paris-Roubaix is adjusted slightly from year to year as the older roads are resurfaced and the race organisers seek to replace them with other challenging cobbles, to maintain the character of the race - in 2005, for example, the race included 54.7 kilometres of cobbled sections. The race finishes with 750 meters on the smooth concrete expanses of the large outdoor velodrome in Roubaix.