Prix de l'Opéra
After a break of two months, Theia returned in the Prix de la Côte Normande at Deauville Racecourse on 12 August in which she was matched against colts for the first time. She started the 5/4 favourite, but finished third of the eleven runners behind Iron Duke and Cheraw. On 5 September, Theia, ridden by Gerard Dubroeucq, started 2.3/1 second favourite behind Antrona in the Group Three Prix de la Nonette over 2100 metres at Longchamp. She recorded her fifth win, beating Antrona by half a length, with No No Nanette a length and a half away in third place. Two weeks later she was moved up in distance for the Prix Vermeille over 2400 metres and finished fifth behind the François Boutin-trained Lagunette. After finishing fourth behind the four-year-old Dona Barod in the Prix de l'Opéra on 3 October she was sent to England for the Champion Stakes in which she finished unplaced behind Vitiges.