Peeters set a national record at her first meet of the season at the Caledonian Ground on Saturday with a throw of 56.84m, an increase of 10cm from her previous best, set in Sydney last year.
The 23-year-old said she was chuffed to have set the record so early in the season.
''To be fair, I had the winter over in Europe, preparing for the University Games. They did not go that nicely but coming back here I knew I had put the training in, had done the work and could throw big,'' she said.
''The conditions were great and it was a beaut day.''
Peeters set the record with her final of six throws.
''I had a good start with some 49m throws and then my second one was 54.98m, so that gave me a little more confidence to really go for it.
''With the javelin you sort of know with all the training you do when you have thrown a good one. They stay in the air a bit longer.
''And this one did so I was eagerly anticipating the distance. To be 10cm longer might not sound a lot to a most people but it is a lot. It was awesome.''
Peeters said celebrations were very low key as there was a long season ahead and the ultimate goal was to compete at the Commonwealth Games on the Gold Coast in April.
The B standard Commonwealth Games qualification is 59.70m, a distance she feels she is capable of reaching. The A standard is 63m.
Peeters said the trials for the javelin were set for the Cooks Garden Classic meet in Whanganui in late January so she had to be at her peak then.
That had forced her to start her season much earlier but it had immediate benefits with the record.
Peeters and coach Raylene Bates had changed her training routine this season, working in two-week blocks as opposed to one-week blocks.
In the first week, she did heavy weights and high-intensity training while she scaled that back slightly in the second week as she looked to compete at the end of the week.
''I did not know anything different. For me I respond really well to gym work and I feel like I am still working really hard through the two weeks. I can get the best of both worlds.''
New quota systems for the Commonwealth Games are going to make it tough to gain selection for the Gold Coast.
Driven by a desire to cap costs, Games organisers have given Athletics New Zealand a quota of just 19 athletes to be selected for the Games.
That means Athletics New Zealand will have to pick the top 19 athletes who have the strongest chance to win gold.
Peeters said that would mean competition would be cutthroat this season.
''That could mean I could throw the distance but not make it as someone else, say a pole vaulter, might get a slot ahead of me.''
Peeters has just finished her physical education degree at the University of Otago and is now fully focusing for this season on her athletics career.
Parafed athlete Caitlin Dore also set a national record on Saturday. Dore set a national para record in the F37 shot put with a distance of 8.15m. She was originally a shot put and discus specialist but moved to javelin a couple of years ago.
