A sensational swim leg from the 21-year-old led to a rare treble which included the Nutri-Grain Ironman and Coolangatta Gold.

“I did not think that would happen standing on the line, I was nervous looking at those conditions," Miller said. 

"I always say to the girls that I hate dumpy surf like that and we turn up and it’s like that. All the training in it has paid off. I’m over the moon right now."
The lead changed several times over the course of the race with Hannah Sculley establishing an early advantage during the board stage.
However, Miller was never far from the front and was one of seven in the chase after the board.
Sculley surrendered the lead when she fell off her ski early in the second stage and Miller along with two-time champion Courtney Hancock took control. 

The pair went stroke for stroke in the swim phase and Hancock applied pressure the whole way home but it was Miller who caught the wave and raced away to victory.
“I actually made a rookie error and slewed my ski on the easiest bit of the wave, I got caught up in where I was in the race and tried to bring myself back in focus for the last leg of the swim and focus for the last leg," Miller said.
“I do like swimming last when I’m tired. I knew it was going to be tricky. Courtney is an amazing swimmer, I knew it was going to be pure determination, so happy for Courtney to be up there.
“An Australian title is so hard to win so this one is definitely up there," she said. 
Hancock crossed the line shortly after Miller to claim silver and there was a sprint finish for third with Brielle Cooper edging out Lizzie Welborn.