Weir set a Commonwealth record in the 2015/16 season of 348 winners, with his last winner coming in July, the final month of the racing season.

The victory of Stylish Miss in a benchmark 78 race at Warrnambool on Thursday gave Weir the new record while Craven Image in the 2000m benchmark 64 race brought up No. 350.

"It's done", Weir said after the win of Stylish Miss.

"The number of winners is great, but the Group One winners is the one we've got a lot of satisfaction out of this season.

"We've had seven this season and we thought if we could train six it would be amazing which is one every two months.

"We just wanted to be competitive in the top-end Group races and we're lucky enough now to have that better class horse that gives us that chance.

"Obviously Black Heart Bart has won most of them but the other horses have all gone well."

Weir also set a new training record at the Warrnambool three-day carnival preparing 14 winners including feature race wins with Ulmann, Renew and High Church.

Weir won a Mercedez-Benz in 2014 after Akzar, who won the Warrnambool Cup, was one of seven winners that year while last year he prepared eight winners over the three days.

"You set the jumpers for the carnival and also the Wangoom and the Cup while the rest of them that are fit and ready to go we see what races are there to put them in," Weir said.

Weir won four races on the opening day, five on the second and five on the closing day.

Meanwhile, Regina Coeli has emulated her elder half-brother Al Garhood by becoming a dual winner of Warrnambool's gruelling Grand Annual Steeplechase.

The winner of the 2015 Grand Annual, Regina Coeli led throughout under John Allen in Thursday's 5500m test of stamina over 33 obstacles.

Sent off at $18, the mare toughed it out to score by two lengths from last year's winner No Song No Supper ($9.50) with the heavily backed $3.30 favourite I'll'ava'alf 3-1/2 lengths away third.

Al Garhood won back-to-back Grand Annuals in 2010 and 2011 after running second at his first attempt while his sibling finished sixth last year.

Following the success of Al Garhood, trainer Ciaron Maher and connections spotted his dam Alstomeria was for sale in foal, with Regina Coeli the result.

"We bought her unborn with a view to winning this race so to win it twice is unbelievable," Maher said.