[3] Fontan joined the French Japauto Honda team and won the 1980 24 Hours of Le Mans with teammate Herve Moineau.
[3] In 1981 he began competing in the premier 500cc Grand Prix world championship as a member of the French Yamaha importer's Sonauto team.
[3] He was crowned French champion in October 1981, and the following weekend took part in the final round of the British championship at Brands Hatch, however he came off his bike at Druids while in sixth position.
[1] Fontan's career ended after a serious arm injury at the 1984 24 Hours of Le Mans left him with nerve damage.
[4] Today Fontan is known for being the principal architect of the Moto-Tour, a seven-day competitive rally that crosses huge swaths of France.