Bathurst Wallabies Triathlon Club has big presence in upcoming Western Sydney Ironman 70.3

This Sunday a total of 12 Bathurst members will take on the 1.9 kilometre swim, 90km bike ride and 21.1km run around Penrith against some of the nation's fittest triathletes.

Peta Cutler is back for another attempt after earning bronze in her division last year, Terry Roberts is on a mission to go one place better than his 2018 silver finish, while Kath Stutsel and Richard Hobson are back for another crack at the Western Sydney event.

Tim Miller, Tom Hanrahan, Luke Gillmer, Chris Walsh, Kristy Powyer, Darren Fenton, Lucy Hobson, Stephen Jackson, Chris Howarth and Scott Mclennan complete the impressive Bathurst crew.

One of the members to watch in the Bathurst group will be Gillmer, who is looking to build upon what's been a great 2019 in triathlon.

Gillmer said with such a prestigious event in Bathurst's backyard it's an easy race for many club members to target.

"It's a great group we've got going down, and it's really our local race as far as bigger events go," he said.

"It's not far to go, saves you a lot of money and we're able to just drive down on the Saturday, so that's why everyone's on board doing Penrith."

Gillmer, racing in a stacked men's 35-39 division, enters in great form.

He was sixth overall in the Huskisson Triathlon's classic distance earlier this year then finished 16^th overall in the Cairns Triathlon when stepping up to the 70.3.

Family life hasn't appeared to have slowed down Gillmer.

If anything, he's only gotten quicker.

"The exciting thing for me is that every race I get to find out how good I am right now," Gillmer said.

"As a dad with two kids and a full-time job I'm not that much slower than when I used to train a lot more. I really enjoy racing now in different circumstances and it's great to race against the best guys for my age.

"I've had a really good training build up for this race and I'm really looking forward to it."

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Training couldn't be going much better for Gillmer.

"I ran the Carcoar Half Marathon three weeks ago and that was the fastest I've run in the last three years," Gillmer said.

"I've got some younger guys I've been training with lately like Jack Reen, who's a good short course athlete, plus new guys Chris Howarth and Scott McClennan who are having their first races.

"Having younger guys around pushing me is giving me a lot of energy."

The lake swim at the Sydney International Regatta Centre, the bike leg along Castlereagh Road and run along the water's edge are all flat, inviting legs for many competitors.

Such a course tends to encourage a lot of first-time half marathon competitors.

With calm, overcast conditions predicted it's expected to be a great opportunity for the more experienced entrants to eye off a personal best performance.

"It's a fast course and everyone will be going there to set a PB," Gillmer said.

"This year we're looking lucky with overcast conditions and a cold front coming through."