Both 16-year-old Lilly Pott and 14-year-old Kaleb Miles train at Narooma Swimming Centre under head squad coach, and Miles' older brother, Riley Miles. They will travel to Adelaide to compete in the championships from April 11 to 18.

Miles is racing in the 50 metres freestyle and 50 metres backstroke, while Pott is racing in the 50, 100 and 200 metres breaststroke.

Mr Miles said the Australian aged championships were the biggest annual swimming event of the year.

"It's the best swimmers in each age in the country," he said. "This is as big as it gets, and to have two swimmers from our program competing is amazing for the area."

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He could not remember the Eurobodalla ever having two swimmers qualify to compete at the event before.

Miles said he could not wait to race the fastest boys in his age group from around Australia.

Pott said qualifying for the championships made all the 5am starts for training five or six times a week worth it.

Mr Miles said both the athletes followed a "very intense" training regime. Training to qualify started late in 2021 and will continue without pause until the conclusion of the nationals championships.

Both athletes train up to eight times in the pool plus four gym sessions per week. Sessions begin at 5am and swimmers will have swum up to five kilometres by 7:30am. Then they return to the pool in the afternoon to keep swimming. This program is balanced on top of studying, homework, socialising and other commitments.

"My favourite part of my job is watching my swimmers' hard work and dedication turn into results," Mr Miles said. "I'm so proud of how they have managed to train even harder since qualifying for Adelaide.

"They really want good results and it shows in the way they have been training in the lead up."

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Mr Miles said with nationals just two weeks away, now was the time for the "final taper phase" of training, where race tactics were finalised and athletes made sure they are energised and ready to race.

Pott wants to pursue competitive swimming when she graduates at the end of 2022. She doesn't enjoy the recovery-break swimmers normally take after a racing event - she just wants to keep swimming and training. Mr Miles said she could be the best in the world one day.

Miles is looking forward to finishing the championships in Adelaide; Mr Miles has agreed to buy him a Big Mac and chocolate thickshake from MacDonalds as a reward for all the training effort.

The Australian age championships are from April 11 to 18. Races are livestreamed on the Swimming Australia website.