It is the running where he has most issues, battling calf strains and plantar fascia issues in recent years.
"I felt strong enough to compete at the Taupo Half, which is the first time for many years that I can remember racing at that distance in December. In the past, I would have only just got back into training.
"I had absolutely no running behind me in Taupo and got second, so I am pretty happy where I am at.
"Ironman New Zealand is still the main target but I love racing at Mt Maunganui. It's been five years since I last won and a ninth win there would be great."
He rates Taupo winner and defending champion Callum Millward as the man to beat.
"He's one of the younger guys who is doing really well. He has the speed and is looking to push through into the international scene.
"Tim Berkel from Australia had a great year with wins all around the world ... so he isn't coming over just to make up the numbers.
"Michael Poole is another good young prospect. And then there's Brodie Madgwick and James Bowstead who are among those other good younger guys on the scene."
The largely flat course at Mt Maunganui for the Port of Tauranga Half has some hurdles.
"Because it's flat on the bike, the speeds are really high. So if you don't get a good swim, it can be really hard to get back into the race.
"And the run around the Mount base track is tough. It's undulating and you do it twice. We strike it the final time at about the 17km mark and ... by that stage those undulations seem like pretty big hills."
After more than 20 years in the sport, Brown says he can't imagine not competing.
"I love it. It's my job but I love getting out there and training every day. I love the feeling of being fit and healthy. That's what still drives me.
"I'll keep going until I don't have that passion for going out training 40 hours a week. That's when I'll know that it's time to hang up the shoes."
It's a fair bet Brown will continue to set the standard for any aspiring Kiwi triathlete wanting to break into the international endurance scene.
Meanwhile two-time winner Jo Lawn is favourite for the women's title after claiming the title in 2011.
The main competition is likely to come from former Mt Maunganui triathlete Michele Bremer, who won Ironman Western Australia recently on debut and super-talented Australian Christie Sym.