Britain’s premier sprint has a story this year that goes beyond the form book.
The Coolmore City of Troy Nunthorpe Stakes, run over 5 furlongs at York on Friday 21 August at 15:35 BST, is traditionally the race that settles arguments about who is the fastest horse in training. Twenty declared runners make this the deepest renewal in recent years. And at the centre of it all is an Australian mare named Asfoora, who is running her final race before retirement.
Her trainer Henry Dwyer has confirmed it. The Nunthorpe is Asfoora’s goodbye. That confirmation changes the atmosphere around Friday’s race in ways that straight form analysis cannot fully capture.
What the Nunthorpe Is
To understand why this matters, you have to understand what the Nunthorpe represents. It is a Group 1 over 5 furlongs, open to two-year-olds and older, which means the best sprinters in the world can line up against the most precocious juveniles of the current generation. That age cross is unusual at Group 1 level in Britain and makes the race genuinely unpredictable from year to year.
The Nunthorpe has been won by horses that went on to define a generation of sprinters, and by horses that peaked on a single August afternoon and were never quite as brilliant again. What makes it special is the purity of the test: five furlongs at York is flat, straight, and unforgiving. There is nowhere to hide and no tactical game to play. The fastest horse, ridden well, wins.
Twenty runners in a straight 5-furlong Group 1 creates a specific set of challenges. Draw and pace will matter. Horses caught wide early in a sprint of this distance can lose ground they cannot recover. The stalls position is worth watching when the draw is confirmed.
Asfoora: The Farewell Tour
Asfoora has had a career built on Group 1 quality in Australia. She arrives in Britain as an established top-level performer, and her connections chose the Nunthorpe as the final act, not a domestic Australian race, not a quieter European listed contest, but Britain’s most prestigious Group 1 sprint.
That is not an accident. The decision tells you something about the respect her camp has for the Nunthorpe’s standing in world racing, and it tells you something about the belief they have that Asfoora is good enough to compete at the very top of the European sprint division.
Henry Dwyer’s confirmation that she retires after this race adds an emotional layer that horse racing rarely gets at Group 1 level. When a trainer publicly states that a race is a horse’s last, it typically means the horse has arrived at the track in the best possible shape. You do not send a retiring champion out on a Monday just to make up numbers. You send her when she is ready.
Whether Asfoora can translate Australian Group 1 form to a British summer sprint is the key analytical question. The two environments are different. Australian racing tends to be run on firmer ground with different pace dynamics. The Knavesmire in August on good to firm going is not alien to what Asfoora has encountered, but it is not identical either. She will need to adapt quickly.
Bacio: The Favourite’s Case
Bacio holds the ante-post market at 3/1 (Paddy Power/Racing Post, at time of writing). That price reflects genuine confidence from the betting market in a horse who enters the Nunthorpe as the home nation’s clearest representative at the head of the betting.
At 3/1 in a 20-runner Group 1 sprint, Bacio is not prohibitively short. The market is saying she is the most likely winner without making her a certainty, which is the right framing for a race this competitive. To win the Nunthorpe from the front of the market, she will need to handle whatever tactics the field throws at her, come out of the stalls cleanly, and find the line at exactly the right moment.
Sprint races at the top level are often decided by fractions. A horse that goes a length clear at the 2-furlong pole can be caught by one who is still accelerating with 100 yards to run. Bacio’s supporters will be hoping she has the finishing kick to hold off a field that includes Asfoora and 18 others.
The Wider Field
Twenty declared runners gives this sprint unusual depth. Beyond Asfoora and Bacio, the full field will contain horses from multiple European yards who have each been pointed at this race through the summer. Sprinting form from Goodwood, Deauville, and the Irish meetings feeds directly into the Nunthorpe picture.
A 5-furlong Group 1 with 20 runners is also a race where the outsiders can land. Sprinters who have shown high early speed in lesser company occasionally translate that into a result at Group 1 level when conditions suit. The draw, the pace, and the going all have the potential to bring a surprise into frame.
What to Watch
Get to the draw when it is confirmed. In a straight 5-furlong race at York with 20 runners, a high draw can be a disadvantage if the pace is set on one side of the track. Low-drawn horses who break well tend to get into a rhythm earlier.
Watch the first furlong closely. Sprint races at this level are often decided in the opening stages. A horse that is sent off slowly or gets squeezed at the start can lose a length or more in the first 100 yards — and over 5 furlongs, a lost length is very hard to recover.
Watch Asfoora’s early pace. Australian sprinters tend to be efficient from the gate. If she travels well in the first two furlongs, her finishing speed could carry her all the way to the line.
Note: Jockey declarations are expected on Thursday 21 August morning. Check Racing Post for confirmed riding arrangements and the final draw before the race. All ante-post prices correct at time of writing and subject to change.
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