He is trained by Aidan O'Brien at Cashel in County Tipperary, arguably the most powerful yard in European racing. O'Brien has already sent out 144 winners this season alone — a staggering number that puts his operation in a league of its own. When a horse from this stable is being specifically targeted at the Epsom Derby, people pay attention. The Derby is a mile and a half around one of the most demanding tracks in Britain, and O'Brien has described Pierre Bonnard as a horse with a long stride, a beautiful mind, and the natural relaxation that makes a mile and a half look well within reach. Those aren't throwaway comments — they're the words of a trainer who has won the race more times than almost anyone alive.
The plan is clear: prep races at Leopardstown — likely the Ballysax and the Derby Trial — before Epsom in June. After a seventh-place finish at the Curragh, O'Brien was quick to explain it away: the horse was unsuited to the pace and needs a step up in distance. His jockey agreed. Far from a setback, that run was described as something he would leave well behind him. The fact that the stable came out with such certainty — "he will definitely come back for the Derby Trial" — suggests this is a horse they hold in the very highest regard.
The win at Saint-Cloud, on softer ground, was particularly telling. The team wasn't sure he'd handle the conditions, and he handled them just fine. O'Brien called him "a Derby horse" in the immediate aftermath. For a trainer of his experience to use that phrase so plainly, before the horse has even turned four, is about as strong a statement of intent as racing produces. Pierre Bonnard is, by any reading, one of the most exciting horses in training heading into the summer.
| Course | Races | Results | Last visited | Win rate |
|---|---|---|---|---|
| Leopardstown Galloping |
3 | 1 second, 2 other | 10 May | 0% |
| Newmarket Galloping |
1 | 1 win | 11 Oct | 100% |
| Dundalk Galloping |
1 | 1 win | 15 Aug | 100% |