On the 15th, France Galop, the organizer of the G1 Prix de l'Arc de Triomphe, announced the list of registered horses for the October feature. Among the 73 entries, three are Japanese-trained horses: the three-time G1 winner Do Deuce, last year's G1 Hopeful Stakes winner and Japanese Derby hopeful Regaleira, and Shin Emperor, the full brother of the 2020 Arc winner Sottsass.

From Europe, the entries include Auguste Rodin, an Irish horse sired by Deep Impact, and his stablemate Tower Of London.