While no rider has ever won all three grand tours in a single calendar year/season, three riders have won the three Grand tours consecutively across two seasons, thus holding ''all the jerseys'' at one time. Eddy Merckx won four consecutive grand tours in 1972 1973: Giro 1972, Tour 1972, Vuelta 1973, and Giro 1973.

No cyclist has won all three Grand Tours in the same calendar year, but Eddy Merckx, Bernard Hinault and Chris Froome have won all three in succession (thus holding all titles at the same time); the only other cyclists to win all three Grand Tours at some point in their career are Jacques Anquetil, Felice Gimondi, ...