Racing for her club. The next Kiwi paddler home was Rachel Dodwell (42.19) in fourth and Jamie Lovett (43.23) in fifth.
Eastern Bay Canoe Racing, Carrington said she was happy to be back out on the water.
"I was a little bit sore for the first race but It's good to be back on home soil so to speak. You couldn't go anywhere else in the world and it would be like this."
Carrington said being back amongst her club mates was always special.
"It's really cool to have young kids coming through and it's quite a bit of a family community. So it's cool to be with them."
As well as Carrington the event saw a number of other Olympians taking part.
Olympian Ben Fouhy was second in the K1 100m behind Australian's Kenny Wallace the bronze medallist in Beijing and fifth in the K2 at London. Wallace dominated the event beating Fouhy by 3.5 seconds with fellow Australian Lachlan Tame third.
In the men's K1 500m Australia took out the two top spots with Olympian Kenny Wallace first and Lachlan Tame second. The first Kiwi home was Marty McDowell followed by Fouhy.