Her first win came at Navan in April 2026, and what was striking about it was the manner in which jockey Joey Sheridan rode her. Speaking afterwards on Racing TV, Sheridan was clear that he was "riding to win" from the front — no sitting in and hoping, no waiting for luck. He described her simply as "very classy," which from a jockey who knows he is aboard a live one carries real weight. Within six weeks she had followed that up with a win at Epsom Downs on the 5th of June — one of the most famous and testing tracks in the sport, where the undulating, camber-heavy course catches out horses that are not genuinely good. Winning there is never fluky.
She is trained by Joseph Patrick O'Brien at Owning Hill in County Kilkenny, one of the most productive yards in training right now — 160 winners sent out this season alone. O'Brien had flagged her potential before the Navan win, noting she had been "just nabbed" on her return to racing by a high-class horse in a competitive race — which, in plain terms, means she ran an excellent race and was beaten by something very good rather than anything she did wrong. He described her as exciting and talked openly about stepping her into better company, which is a trainer publicly saying he thinks his horse belongs at a higher level.
Her recent form reads 4-1-1-2-2-4, meaning her last six runs have produced two wins and three placed efforts — she has barely been out of the frame. She raced just one day ago and remains active. At three years old, with a trainer of O'Brien's calibre pointing her at stakes races, and a Epsom win already on her record, Thundering On looks like a horse whose best days are still ahead of her.
| Course | Races | Results | Last visited | Win rate |
|---|---|---|---|---|
| The Curragh Galloping |
3 | 1 second, 2 other | 27 Jun | 0% |
| Epsom Downs Undulating |
1 | 1 win | 5 Jun | 100% |
| Navan Galloping |
1 | 1 win | 25 Apr | 100% |
| Leopardstown Galloping |
1 | 1 second | 12 Apr | 0% |