Adapting well to the event's 11^th hour change of format - blue green algae at Gosling Creek forced the races to be held as run-cycle-run duathlons - the Piranhas rocketed into contention and then claimed the division two title by nine points from St George.

"We're rapt, the three-peat, we did it," Piranhas vice president Michael Lockyer said.

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"We really are over the moon. Our numbers were actually a little bit down (from last year) but we still put a formidable team on the starting line and when it comes down to just nine points you realise how important all of those athletes are, and the volunteers too, of which we had nine."

Individually the Piranhas shone too.

Sophie Martin produced an inspired effort to win the Junior Super Sprint girls' division and her age group, clocking 30 minutes and 51 seconds to do so, fellow Piranha Piranha Jessie Tudor (32.10) wasn't far behind in second and Maitland's Sienna Kinder (32.10) in third.

Martin was actually the third-finisher overall too, behind boys' winner Liam Mernagh (29.02) and second-finisher Jack Young (30.05), from Cronulla and Performance Triathlon Coaching respectively.

Rory Thornhill also picked up a win in the Club Championship Half-Distance men's division, clocking 50.31 to edge out Warringah's Luke McLean by just three seconds. Orange's Tom Tudor (51.05) was another 31 seconds back in third.

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Jessie Dean was the Piranhas' best-performed in the women's division, finishing fourth in 1.02.58, just under two minutes behind the winner in Ella Kate-Hussein (1.10.06), from The Hills.

In the main race Sydney Triathlon Group's Sam Douglas justified the hype once again, the professional and regular on the international scene clocking 1.30.09 to win by over a minute from former world champion Owain Matthews (1.31.23), with James Martin (1.34.01) a length further back in third.

In finishing 75^th overall Warringah's Nicole Ward was the fastest female, she clocked 1.49.10 to narrowly edge out Orange's Katie Sutton (1.50.39), with The Hills' Rachel Knellwolf (1.51.51) running third.

Jack Bilton was the best-performed of the Piranhas men, he finished eighth overall in 1.36.32.

"[Thornhill and Martin] were outstanding in their races," Lockyer said.

"Katie coming second overall was massive as well and Jack coming eighth too, a top 10 finish for him is just awesome and he really wasn't all that far off the pace either, which is huge for such a young bloke.

"Of the older statesmen Dave Hunter was enormous too, he finished [25th] overall and second in his [45-49 men's] division.

"It was a runner's day obviously, with no swim. There was a few people who said it was a shame about not having that swim but for all of them there was someone saying 'you beauty, I don't have to swim'.

"And everyone travelling could see how low the water was, and how dry the countryside is, so I think everyone understood."

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There was a sense of deja vu in the other divisions too, as The Hills and Kiama defended their division one and three titles respectively as well.

Unfortunately, Lockyer said, the Piranhas didn't have a chance to claim a country championship three-peat as well, that section of the competition wasn't contested this year, although the club did come third in the junior section.

There's been no steadfast indication to suggest it will be return next year either so, putting a positive spin on it, Lockyer said it'll be a feather in the club's cap if they end up being the last club to be engraved on the trophy.