Local Cairns rider Tracey Hannah (Polygon UR) finished second to world champion Rachel Atherton (Trek Factory Racing), the seemingly unbeatable Brit.
Atherton won by over seven seconds, in a sport where differences are usually fractions of a second. Manon Carpenter (Madison Saracen) took third.
"I am absolutely exhausted that final pedal was a real killer," commented Atherton.
"As I was coming into it I heard the commentator say 'Seven and a half seconds down' and I was thinking, 'Oh dear, that's a shame cuz I had a good run'.
"And then I looked back as I crossed the line and realized that I had won and Tracey was 7 seconds back. I wanted Tracey to win, I really did, but then, a race is a race. Everyone rode well. I know what it's like to win [at home] like at Fort William and I'm sort of gutted for Tracy but I've got some bills to pay..." she said.
"I stayed really calm and did the best I could," said Hannah, "and, well, today second is good enough for me."
Australia's Sian A'Hern was the top Junior woman.