He never imagined a horse like Winx might come along and change his life, but he did aspire to etch his name on the honour roll of Australia's greatest races, the Doncaster Mile significant among them.

"When I was young there was two races I wanted to win. One was a Melbourne Cup and the other was a Doncaster," Bowman said.

"Obviously with my career going the way it has, I couldn't, in my wildest dreams, have thought things would turn out the way they have, but they have.

"That said, the Doncaster, to me, is the one in Sydney that is the pinnacle."

Bowman has one Doncaster win to his credit courtesy of Winx and it is perhaps fitting that the horse once considered her greatest rival could deliver him a second.

The champion jockey will team up with Hartnell in Saturday's $3 million Randwick feature as the Godolphin gelding bids to join Happy Clapper, Winx and Super Impose as the only horses in the past 40 years to claim the Epsom Handicap- Doncaster Mile double in the same season.

The eight-year-old, who will be lining up for his 50th start, has been racing in great heart and heads to Saturday off a second to Mystic Journey in the All-Star Mile at Flemington.

With top weight of 58kg he will be conceding an advantage to his 19 rivals but Bowman can find plenty of positives, including his ideal draw in barrier seven.

"We won the Epsom together and he's just so consistent," Bowman said.

"His run in the All-Star Mile was excellent, you could say he might have been unlucky not to win that and I love the draw for him.

"All I've got to do is make sure he gets his chance and if he has his chance and runs his race, I cross my fingers that we win."

Hartnell was a $10 Doncaster Mile chance on Thursday, with three-year-old Brutal the $5.50 favourite. Hartnell's stablemate Alizee and the Lindsay Park-trained Fifty Stars share the second line of betting at $7.

While Winx won't be racing at Randwick on Saturday, Bowman will still team up with the champion mare in one of her final appearances before retirement.

Winx will strut her stuff over 1000m on the course proper in an exhibition gallop before the first race at Randwick on Saturday.

One of Australia's greatest thoroughbreds, Winx is set to bow out of racing in the Queen Elizabeth Stakes at Randwick on Saturday week.

She will again team up with Bowman there as she attempts to claim the $4 million weight-for-age race for the third time.

Winx's winning streak stands at 32 and includes an unprecedented 24 Group One victories.