Klairon was a representative of the Byerley Turk sire line,[4] unlike more than 95% of modern thoroughbreds, who descend directly from the Darley Arabian.
[3] Monade was then sent to England and started at odds of 7/1 for the 184th running of the Oaks over one and a half miles at Epsom Downs Racecourse in which she was ridden by Yves Saint-Martin.
The racecourse judge was unable to determine the result from the original photo finish but after two additional prints were scrutinised the French filly was declared the winner by a short head.
[3] On her return to France Monade recorded another major win in the Prix Vermeille over 2400 metres at Longchamp Racecourse in September, beating Prima Donna into second with Gaspesie in third place.
When returning to the scene of her Oaks triumph she was unplaced behind Exbury in the Coronation Cup but ran better later in June when she came home second to Manderley in the Prix d'Ispahan.
In the following month she recorded her second important success of the season when she upset the Epsom Derby winner Relko to take La Coupe de Maisons-Laffitte.