Kuebler was 31 in 1950 when he won that year's 4,690 kilometre (2,914 mile) edition of the Tour de France.
A year later, he won the world championship race in Varese, Italy.
Although he claimed victory in the Tour of Switzerland three times, it took him a decade as a professional before he won the sport's most prestigious race.
Kuebler, known by Swiss fans as "Ferdy National", is one of only two Swiss Tour de France winners along with Hugo Koblet who claimed victory in 1951. Koblet died in 1964 in a car crash.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
(Reporting by John Miller, editing by Ed Osmond)
