Aidan O'Brien is targeting a third victory in the prestigious Prix de l'Arc de Triomphe at Longchamp on Sunday.

The Irish trainer saddles just over a quarter of the field, five of the 19 runners, but not the favourite Enable, which could become the eighth dual winner of the 98-year-old Group One contest in Paris.

"We're looking forward to it and we're happy with our horses. O'Brien told RTÉ Sport. "We hope that they run well but it's very competitive.

St Leger winner Kew Gardens is considered O'Brien's main chance for the almost €3m prize, at fourth favourite, with  Capri just behind him, and Magical, Hunting Horn and Nelson long shots.

"We're very happy with him," the Ballydoyle handler said of Kew Gardens.

"We always thought a lot of him. We were training him for the King George in the middle of the summer and all of our horses just went under a cloud about that time so he didn't get to run.

"We trained him then for the Leger and obviously we were delighted with him there. It's not long since he ran in the Leger but he seems to be in good form.

"He won a Group One over a mile and a half, the Grand Prix du Paris, in Longchamp in the middle of the year. He knows the track and I'm looking forward to seeing him run.

"A horse is like any athlete. He was there and seemed to handle the track and the distance. The way he's naturally made, the track seems to suit him.

"Capri, we always had our eye on it for him, he's an older horse, all the others are three-year-olds.

Ryan Moore won the Arc with Found in 2016

O'Brien doesn't believe that having a number of runners offers any tactical advantage, no more than having won the race in the past. 

"I'm not sure about that," he said. "It obviously gives us more chances.

"These type of races are usually strong, evenly run races anyway.

"It's always going forward, we never think much of the past.

"We were there and we had horses that won it before, which is great and is good experience for us but it's all about the future.

"I'm just hoping we can be competitive in the next one."