Aidan O’Brien’s Scandinavia The One To Beat in the St Leger 2025
This year’s Betfred St Leger at Doncaster has drawn one of the most intriguing fields in recent memory, and at the heart of all the pre-race discussion is Aidan O’Brien’s Scandinavia, a colt whose consistent form and top-class connections make him the clear standout in Saturday’s line-up.
Scandinavia is set to headline the final British Classic of the season, held over 1m6½f, with a group of exciting three-year-olds in hot pursuit for glory.
Owned by Michael Tabor, Derrick Smith, and Susan Magnier, Scandinavia is trained by Aidan O’Brien, the master of Ballydoyle whose recent strike rate is a strong 17%.
This colt boasts a pedigree that brings together some of the best stamina and class lines in international racing.
His sire, Justify, was an American Triple Crown winner and a proven producer of quality staying types, while his dam, Fabulous, is by Galileo, a legend in his own right and a pre-eminent source of stamina and class on both sides of the Irish Sea.
With the declaration confirmed for Saturday’s classic at Doncaster, all eyes are on how he’ll fare against the best of his generation.
Betfred St Leger Field

Scandinavia is the market leader at 6/4 for Saturday’s showpiece, a price that reflects both his current form and the faith of bookmakers in Aidan O’Brien’s ability to prepare him for this unique challenge.
Ballydoyle’s dominance is further underscored by the presence of stablemates Lambourn (5/2), itself an obvious danger if allowed an uncontested run, and Stay True (15/2), each possessing the right blend of stamina and tactical speed.
Tracing Scandinavia’s main rivals, Carmers comes in at 9/2, having defeated Scandinavia at Ascot in June and running for Paddy Twomey with Billy Lee aboard.
Further, and Tarrience, both trained by Andrew Balding, have each shown moments of promise this season though each would need to produce a career-best performance to be involved at the business end.
Rahiebb, trained by Roger Varian, is an outsider at 25/1, whilst the other shot, Tarrience, is quoted at 22/1 under Colin Keane, though those odds have fallen from 33/1 so don’t rule him out just yet!
| No. | Draw | Horse | Jockey | Trainer | Odds |
|---|---|---|---|---|---|
| 5 | (7) | Scandinavia | Tom Marquand | A P O’Brien | 11/8 |
| 3 | (1) | Lambourn | Sean Levey | A P O’Brien | 9/4 |
| 1 | (4) | Carmers | Billy Lee | P Twomey | 9/2 |
| 6 | (3) | Stay True | Mickael Barzalona | A P O’Brien | 15/2 |
| 2 | (6) | Furthur | Oisin Murphy | A M Balding | 10/1 |
| 7 | (5) | Tarriance | Colin Keane | A M Balding | 22/1 |
| 4 | (2) | Rahiebb | Ray Dawson | R Varian | 25/1 |
Why Scandinavia Is The One To Beat
On paper, Scandinavia’s record stands out for both its consistency and the quality of his form.
Seven career starts have yielded three wins, a second, a third, and total career earnings exceeding £413,000, a testament to both his ability and the calibre of races he’s contested.
His recent results illustrate just how progressive he’s been this season: a dominant victory at Goodwood in July, where he fought off the well-fancied Illinois to win by a comfortable three-quarters of a length, showed his ability to stay two miles and beat genuine Group 1 opposition.
His rating following that Goodwood win, 117, also marks a career peak, indicating he is reaching his best form at precisely the right time.
He has the right blend of stamina and tactical speed, and his two-mile win at Goodwood and recent Group 3 trouncing at Newmarket demonstrate he handles fast ground and stays further than the Leger trip with ease.
Aidan O’Brien has lifted the St Leger trophy multiple times and understands the demands of preparing a horse to peak for this challenging distance.
Scandinavia’s owner-breeder axis represents racing’s elite, delivering horses who time and again have produced on the Classic stage.
As a son of Justify from a Galileo mare, Scandinavia brings optimal genetics for stamina, grit, and late-season maturity.
The Tactical Race

The St Leger is often a race defined by tactical nuance such as who gets the run of the race, which horse settles best early, and whether the pace allows the true stayers to make their mark.
Scandinavia’s experience at both front-running and sitting handy will stand him in good stead.
Doncaster’s long home straight offers every chance for horses to settle before unleashing a sustained challenge, and Scandinavia is sure to be well-positioned by Ballydoyle’s team to strike at the crucial moment.
Given that Carmers beat Scandinavia at Ascot, some punters may look for reasons to oppose the favourite. Yet race conditions differ, and Scandinavia’s subsequent step up has shown marked improvement.
Lambourn, an O’Brien stablemate, seems to offer the main threat if progressing from recent runs. If team tactics come into play, Scandinavia’s proven finishing burst could prove decisive against rivals who may lack his stamina reserves late on.
The Promise Of High Drama
The 2025 Betfred St Leger promises high drama, and Scandinavia is deservedly expected to be at its centre.
With outstanding recent form, trainer and owner excellence, and a pedigree built for staying races, he is perfectly poised to deliver the season’s final Classic for Aidan O’Brien.
The betting market reflects both Scandinavia’s obvious ability and the faith racing fans and punters have in his continued ascent.
Should Scandinavia win, it will be another chapter not just in his own story but also in the ongoing legend of Ballydoyle and its pursuit of British racing’s highest honours.