COFFS Harbour's Cassie Scully has achieved the crowning glory of her sports aerobics career, a silver medal at the World Championships.

The 26-year-old finished runner-up in the individual women's category to world champion Irina Matilainen of Finland at the FIASF World Sport Aerobic and Fitness Championships held on the Gold Coast.

Near-flawless routines from the 10-time Australian champion earnt her top marks for her technicality and helped her achieve a career-best finish on the world stage.

"It's amazing, I've achieved my goal of making the podium at the worlds," Cassie said.

"My previous best was fourth after the women's world youth title in 2004, but this is the result I've wanted for a long time now.

"It took me six months of intense training to be fit enough to complete my two-minute routine of high-intensity moves.

"I predicted that the girls from Finland and the Czech Republic would be awesome and I was right. I managed to put together three strong routines with hardly any errors.

"I performed to my potential and got the result I wanted; I'm just so happy with the silver medal."

Cassie won through to the weekend final after solid routines in the competition heats on Thursday morning and night.

"I have said all along this was going to be my last worlds in Australia and I finished the way I wanted to.

"I'm pretty sure the championships are headed back to Europe next year, maybe to the Netherlands again, so who knows I might try and go one better."

Balancing her own career with coaching other elite competitors on the Coffs Coast, Scully said she was equally amazed with the results of her students.

The junior team she coaches, Risqué, came fifth in the same competition, after two of the group's members sat HSC examinations at Tweed Heads High on the same day as competing last week.

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