Originally trained in France, he was switched to a British stable and made an immediate impact, defeating a strong field to win the Gold Cup as a six-year-old.
In the following season he finished third in the King George VI Chase and fourth in the Gold Cup before producing arguably his best performance by running second under top weight in the Grand National.
[2] Mont Tremblant's dam Paltoquette was a great granddaughter of Lady Cynosure (a full-sister to Polymelus) whose other descendants have included Provoke and Right Royal.
Walwyn had problems getting the horse to peak fitness as the gallops at Lambourn were frozen, and was greatly aided when his rival trainer Bill Wightman allowed him to use his training facilities at Upham, Hampshire.
[8] Later that month Mont Tremblant started at odds of 18/1 for the 1953 Grand National in which he carried top weight of 153 pounds and finished second, twenty lengths behind the Vincent O'Brien-trained Early Mist.
[9][10] Mon Tremblant remained in training for several years and finished fourth in the 1953 Gold Cup but suffered recurrent injury problems and never won again at the highest level.