The Grand Tours are the three most prestigious multi-week stage races in professional road bicycle racing. The competitions are the Giro d'Italia, Tour de France and Vuelta a España, contested annually in that order. They are the only stage races permitted to last longer than 14 days. No cyclist has won all three Grand Tours in the same year; the only cyclists to win all three Grand Tours in their career are Jacques Anquetil, Eddy Merckx, Felice Gimondi, Bernard Hinault, Alberto Contador and Vincenzo Nibali. Contador is the youngest, at 25 years, and quickest to win every Tour, completing the feat in 14 months. It is rare for cyclists to ride all Grand Tours in the same year; in 2004, for example, 474 cyclists started in one of the Grand Tours, 68 rode two and only two cyclists started all three.
Cyclists are ranked on the basis of their total wins in the three Grand Tours. When there is a tie between cyclists they are listed alphabetically by the Grand Tour they won. The majority of winners have come from Europe, however there have been a few notable victories for cyclists from other continents. Andy Hampsten, became the first North American to win the Giro, when he won in 1988. The only South Americans to win a Grand Tour are Colombians Luis Herrera who won the 1987 Vuelta a España and Nairo Quintana, who won the 2014 Giro d'Italia and 2016 Vuelta a España.Luis Herrera became the first person from the Southern Hemisphere to win a Grand Tour by winning the 1987 Vuelta a España.