His most successful year was 1991, when he won the International Stakes at York and was named European Champion Older Horse at the inaugural Cartier Racing Awards.
His dam, Nicholas Grey, from whom he inherited his colour, won the Listed Premio Carlo Chiesa and was placed in the Oaks d'Italia.
[3] Lady Beaverbrook was considered an eccentric character[4] who gave most of her horses names consisting of one word with seven letters (Bustino, Relkino, Terimon, Boldboy, Niniski, Mystiko, Petoski), as this was the most common form for Derby winners.
Michael Roberts made steady headway on Terimon, moving up through the field to catch the tiring Cacoethes in the closing stages and finish second, five lengths behind Nashwan.
[10] In his two other starts of the year, Terimon failed to win, but confirmed that he was a Group class performer by finishing second in the Great Voltigeur Stakes and fourth in the St Leger.
On this first start of 1990, Terimon won his first important race, when he produced a strong finish to lead in the last strides and take the Group Three Earl of Sefton Stakes at Newmarket Racecourse.
Most of the open-age Group One races in 1991 were won by three-year-olds, with the classic generation including Generous, Suave Dancer, Sheikh Albadou, Marling, Selkirk, Hector Protector and many other top class performers.
Terimon's win at York was therefore enough to secure him the title of European Champion Older Horse in the inaugural Cartier Racing Awards.