Limestone

Limestone got his first win at Listowel in Ireland back in September 2025, on wet, muddy ground — the kind of conditions that sort out the horses with real engine from those just going through the motions. What has impressed his trainer Joseph Patrick O'Brien since then is that Limestone has not been a one-trick pony about it. Before that Listowel win, he had run well on faster, drier ground at Tipperary, which suggests the horse can handle whatever the weather throws at him. O'Brien, whose yard at Owning Hill in County Kilkenny has sent out an extraordinary 171 winners already this season, has described Limestone as having the makings of a genuine stayer — meaning a horse built for the longer distances, one whose stamina becomes a weapon rather than a question mark.

Winning four from six at the age of three, with a current four-race streak that has taken him all the way to Ascot, puts Limestone in very interesting territory. He wins roughly two in every three races he enters, which for a young horse still learning his trade is the kind of number that makes people pay attention. The combination of a powerful, high-volume yard behind him, a trainer who clearly has a plan for him, and a horse that keeps delivering — that is a profile worth watching. Whatever comes next, Limestone arrives at it unbeaten in four and with nothing in his recent record to suggest he is about to slow down.