1956 Michel started Vermeulin in three disciplines at the Olympic Games in Melbourne. In the team competition, the road drivers - the times of the best three riders in the road race a nation were added - he won gold, together with Armand and Maurice Geyre Moucheraud. In the individual road race he finished in twelfth place, and in the team pursuit, he won silver, with Jean -Claude Lecante, Jean Graczyk and René Bianchi.
1958 Vermeulin was professional, but remained in the wake of the really big successes. In 1959, he won jointly with a team that consisted of Jacques Anquetil, André Darrigade, Seamus Elliott and Jean Graczyk, the Trofeo Longines in Italy. In 1960 he won the GP Fourmies. Three times he competed in the Tour de France; In 1959, he wore the yellow jersey for three days and was 20th overall. In 1966 he ended his cycling career.