It's fair to say Indi Cooper had a big national championships.

Cooper set new Australian under 17 records in the para 200 metres and 400 metres in her T38 classification, for athletes with cerebral palsy.

She also set a new personal best time in the 800 metres.

The Gundagai product was thrilled with her efforts at Sydney.

"It went very well," Cooper said.

"I wasn't expecting to get that quick of times but it pretty good to get all the results I came home with."

The two national records were icing on the cake of a big meet.

"I was really happy with my 400 and 200 metres," Cooper said.

Cooper broke 30 seconds for the first time in the 200 metres, with her new time of 29.71 surpassing the 30.12 she had previously set.

The Gundagai High School student also took a second off her best time in the 800 metres, clocking 2:52.32.

The 15-year-old set herself a big goal in the 400 metres with the prospect of a place at the Tokyo Paralympics up for grabs.

While her time of 1:09.35 took almost two seconds off her previous best, it's short of the 1:05 required to earn a place.

However she is unsure if she will chance her hand again with the standard needed to be set at an Athletics Australia meet

"I'm three seconds off the Tokyo qualifier now and originally I was five seconds," Cooper said.

"That's pretty good.

"There is possibly two more meets but I think they are both in Queensland so we might go over and have a crack but probably not."

Cooper also took out the 100 metres race but her time of 14.57 seconds was just outside her best of 14.37.

Meanwhile, a host of Kooringal-Wagga Athletics Club competitors also performed strongly at nationals bringing home four medals.

Kippy Langat took home silver in the under 18 men's triple jump with a mammoth leap of 14.08m.

It had been his goal for the summer of 2020-2021 to break the 14-metre barrier.

The three Okerenyang brothers finished with a bronze medal each.

Godfrey launched a 7.23m jump in the under 20 men's long jump.

Gerard threw 15.64m in the under 18 men's shot put for his podium finish. He was also sixth in the discus and fifth in his hammer throw.

And Daniel also enjoyed a third with his triple jump effort of 12.96m in the under 15 boys. It means his personal best has improved by a metre-and-a-half this season.

Race walker Hannah Mison just missed a medal but performed brilliantly in open company.

The 19-year-old's fourth placing in the Open Womens 10km walk continued her stunning comeback from a year off and will make the athletics community take notice.

Also competing in open company at the Australian Championships, Carly Salmon was seventh in her T35 100m and 200m events.

Lily Hewitt was in three throwing events in the under 20s, with a sixth in shot put her best result. Ryan Hilder was seventh and eight in the under 18 men's shot put and hammer and Mark Walker 12^th in the under 16 boys 3km walk.

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