Post turned professional in 1956 with the small Dutch team R.I.H. He rode for the first few years with Gerrit Schulte, a track rider who also rode on the road and was an inspiration to him.
Notable early career successes on the road came when he won the Ronde van Nederland in 1960 and the 1962 Deutschland Tour.
In 1963 he became national road race champion as well as winning the Tour of Belgium.

In 1964 Post had his finest moment in road racing when he became the first Dutchman to win Paris–Roubaix.
The race was run at top speed from the start and favourites Rik Van Looy, Raymond Poulidor and Rudi Altig were caught out by the fast pace and missed the decisive break at Arras.
Post’s team mate, Willy Bocklant, was in the break and sacrificed his chances by keeping the pace high for his leader.
Five riders entered the velodrome at Roubaix with Post winning the sprint by beating the world champion Benoni Beheyt in the finishing straight.
The high pace ensured that Post was also awarded the Ruban Jaune for the highest speed in a classic, the 265 km run at 45.131 km/h.
This 1964 record still stands as the fastest Paris–Roubaix although the route has been altered since then.

Post was delighted with his victory, but always the businessman, his delight was increased when he realised his appearance money at the winter six-day races would be increased.
In 1965 Post made his only appearance in the Tour de France but he abandoned before Paris. (
He subsequently acknowledged that he had doped at the Tour de France.)
His only other noteworthy result on the road came in 1967 when he finished runner-up to Eddy Merckx in La Flèche Wallonne although he had wins in smaller races.
Post was voted Dutch Sportsman of the year in 1964 and Dutch cyclist of the year in 1963 and 1970.
Post turned professional in 1956 with the small Dutch team R.I.H. He rode for the first few years with Gerrit Schulte, a track rider who also rode on the road and was an inspiration to him. Notable early career successes on the road came when he won the Ronde van Nederland in 1960 and the 1962 Deutschland Tour. In 1963 he became national road race champion as well as winning the Tour of Belgium.
In 1964 Post had his finest moment in road racing when he became the first Dutchman to win Paris–Roubaix. The race was run at top speed from the start and favourites Rik Van Looy, Raymond Poulidor and Rudi Altig were caught out by the fast pace and missed the decisive break at Arras. Post’s team mate, Willy Bocklant, was in the break and sacrificed his chances by keeping the pace high for his leader. Five riders entered the velodrome at Roubaix with Post winning the sprint by beating the world champion Benoni Beheyt in the finishing straight. The high pace ensured that Post was also awarded the Ruban Jaune for the highest speed in a classic, the 265 km run at 45.131 km/h. This 1964 record still stands as the fastest Paris–Roubaix although the route has been altered since then.
Post was delighted with his victory, but always the businessman, his delight was increased when he realised his appearance money at the winter six-day races would be increased. In 1965 Post made his only appearance in the Tour de France but he abandoned before Paris. (He subsequently acknowledged that he had doped at the Tour de France.) His only other noteworthy result on the road came in 1967 when he finished runner-up to Eddy Merckx in La Flèche Wallonne although he had wins in smaller races. Post was voted Dutch Sportsman of the year in 1964 and Dutch cyclist of the year in 1963 and 1970.
Peter Post