Caytlyn is aiming to qualify for long jump at this year's Paralympics and Ella is hoping to excel at hammer throw.

The sisters are part of a contingent of south-west athletes competing in the championships held over two weekends.

First at Melbourne's Lakeside Stadium and then at Duncan Mackinnon Reserve in Murrumbeena.

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Caytlyn, who will compete for Eureka Athletic Club, said the Paralympics in Japan was still her ultimate goal.

"It's still on the cards, I'm definitely getting better," she said.

"It's a little bit out of my reach at the moment but it's still a possibility."

The T20 athlete needs to get herself in the top-eight in the world.

She'll take on a challenge at the championships to see if she can jump further.

"I have decided to do an able-bodied event, where normally I just do the para and just (compete against) myself really," she said.

"So I decided to do the under 20s able so I can (compete against) some harder people and hopefully it will push me a bit further."

The 17-year-old will compete in the under 20 para 100-metre this weekend. She'll take on the open para long jump and under 20 long jump next weekend.

Ella is looking forward to her under 18 girls hammer throw this weekend.

"It's fun, it's something different to try," she said.

"It's not like every other athletic event because not many people do it.

"Everyone just thinks of athletics as like long jump and 100m and everything but hammer throw is just something unique and different you can do."

The 16-year-old comes into the event with form.

She claimed Athletics South West Turbines' first ever Victorian Country Championships medal with silver in the under 18 girls hammer throw in January.

Ella revealed challenges she has in pursuing her favourite event.

"There's not really many training facilities or coaches down here that accommodate for hammer throw," she said.

"So really I only do it once a week in Ballarat where I have the chance to do it.

"That's the closest place that has cages for hammer throw, it's a different type of cage to a discus one."

Without a coach, Ella has picked up tips from her older sister Jorja who is also an athlete.

Ella will also take on long jump at the championships.

Warrnambool sprinter Grace Kelly (under 15s) is aiming to repeat the 100m and 200m double she claimed in 2019.

Warrnambool's Layla Watson is competing in the under 16 400m and 100m.

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