The 26-year-old, who was crowned the Australian time trial champion in Buninyong on Tuesday, motored away from the Peloton to victory with 700 metres left of the 104.5-kilometre stage from Nairne to Stirling. 

Brown made her way to the front of the race in the final 10 kilometres before leaving behind her opponents and teammates to claim her first stage victory with her new team Mitchelton-SCOTT.

“I am pretty happy. It was the team plan for me and Gracie (Elvin) to have a go in the final here and it’s really awesome after all the hard work that I get a victory myself,” Brown said post-race.

“It was a really hard day actually, much harder than I was expecting. I think my legs are feeling it from the last two days and there was a little bit of doubt, especially after the neutralisation I felt a bit dead, but I think everyone felt it.

“I have got family and friends here watching so it’s really cool to do that in front of them.”

Elvin and fellow teammate Amanda Spratt finished fourth and fifth respectively, with the latter holding her overall 49-second lead heading into tomorrow’s final day of racing.

Spratt, who looks all but likely to seal the five-stage tour on Sunday, was quick to praise her new teammate post-race.

“Grace had already done a monster amount of work on the front in that final 10 kilometres and just never died in the lead out,” she said.

“Grace has just been so strong in all of the races so far and such a great teammate already, so I am really really happy for her.”