Self-described battler Peter Hulbert celebrated his greatest achievement in 35 years as a trainer when Endless Shadow scored an upset win in the Magic Millions Fillies and Mares Handicap at the Gold Coast.

Ridden by Tegan Harrison, Endless Shadow ($19) came with a late rush to defeat Anna Lizzie ($17) by three quarters of a length with Champagne Cath, the $3.30 favourite, a short head away third.

Hulbert trains a small team at Eagle Farm and could scarcely believe his luck when Endless Shadow hit the front in the final 100m.

"I've been training for 35 years and this is our biggest win by far," Hulbert said.

"My son Will helps me and we're a real partnership so to do it together on Magic Millions is unbelievable."

Endless Shadow started her career with Robert Heathcote before she was sent to Tony McEvoy for a campaign in South Australia.

The mare eventually made her way back to Queensland when owner Stewart Barr decided to send her to Hulbert.

Barr will offer a brother to Endless Shadow at Sunday's Magic Millions sales.

Hulbert showered jockey Tegan Harrison with praise for bringing Endless Shadow with a well-timed finish in the straight.

"Tegan's ride today was a cracker and she deserves all the success she gets because she's a wonderful person," he said.