[4] Dubai Millennium was originally sent into training with David Loder at Newmarket and was ridden in all but one of his races by Frankie Dettori.

[9] On his next start, he was moved up in class and distance for the Listed Predominate Stakes over a mile and a quarter at Goodwood, a recognised trial for the Derby.

In July, he was sent to France for the Group Two Prix Eugène Adam at Maisons-Laffitte and led from the start to win "unchallenged" by three lengths.

[14] Hopes that he would be matched against Royal Anthem in the International Stakes[15] were not fulfilled as he was instead brought back to one mile for the Prix Jacques Le Marois at Deauville.

On heavy, rain-softened ground he once again led all the way and "surged" clear in the closing stages to beat the Grand Prix de Paris winner Slickly by two and a half lengths.

[16] On his final start of the year, in the Queen Elizabeth II Stakes at Ascot, he took the lead two furlongs from the finish and pulled clear to win by six lengths.

[5] Dubai Millennium once again wintered in the Persian Gulf and warmed up for the Dubai World Cup with a four and a half length win over the Prince of Wales's Stakes winner Lear Spear in a round of the Listed Sheikh Maktoum bin Rashid al Maktoum Challenge in which he raced on dirt for the first time.

[19] His performance in winning the world's most valuable horse race in track-record time was acclaimed as an "awesome display", and Dettori called the colt "the best I've ever ridden... absolutely unbelievable".

[20] On his return to Europe, Dubai Millennium contested the Prince of Wales's Stakes at Royal Ascot, in which he was ridden by Jerry Bailey, Dettori having been injured in a plane crash.

A media circus erupted, culminating in Sheikh Mohammed proposing a one:one meeting between the two horses and putting down $6 million to back Dubai Millennium to win.

On the morning of Saturday, August 5, as copies of Racing Post bearing the challenge to Tabor from Sheikh Mohammed were distributed, Dubai Millennium suffered a broken leg (a "lateral condylar fracture") in training.

Intensive veterinary treatment and three operations were not sufficient to save Dubai Millennium, and he was euthanised whilst still under anaesthetic on 29 April.