He entered one edition of the Tour de France, in 1975, where he won two stages, held the maillot jaune for six days and finished 7th overall.

[4] After finishing second in 1974 behind Roger De Vlaeminck and in 1976 behind Marc Demeyer of Belgium, Moser finally won Paris–Roubaix, his favorite race, three consecutive times.

Moser came in third in 1981 behind Bernard Hinault and Roger De Vlaeminck, and was also third in 1983 behind Hennie Kuiper and Gilbert Duclos-Lassalle.

Taking advantage of an unusually flat course, Moser made the most of the time-trials and the aerodynamic bike with full disc wheels that he had just broken the hour record using (technology not available to any other rider during the race) to overcome what others had gained in the mountains.

However the result of the race has been called into question by various accusations including shortend or redirected mountain stages, inconsistent awarding of penalties and low flying helecopters being behind some riders but in front of others.

[5] Moser won the 1977 world road racing championship in San Cristobal, Venezuela, in front of Thurau and Franco Bitossi.

As a result, in 1997 the Union Cycliste Internationale banned hour records set on bikes featuring technological advantages.

He continued his father's winery with his children Francesca, Carlo and Ignazio on the family estate Maso Villa Warth in Valle di Cembra, on the hills just north of Trento.