And their efforts paid off over the weekend.

The Bathurst Swim Club took part in the NSW Country Short Course Championships with a mission to record personal bests and state qualifying times - succeeding on both fronts.

Leading the way was Oliver Hamer, who won bronze medals in the men's 10 and under 100 metres freestyle (1:10.57) and 100m backstroke (1:19.20) while ending his campaign with five individual top 10 results.

Taylah Wade was the other club member to claim an individual top 10 finish. Wade was eighth in the women's 15-16 100m breaststroke finals.

Relays were another strong suit for the Bathurst Swim Club.

Their men's 13-14 years 4x50m freestyle relay team of Patrick Saint, Tyler Johnson, Liam Deegan and Thomas Press finished ninth with a time of 1:54.54.

The same quartet achieved an identical result in the 4x50m medley relay, touching the wall in 2:09.08.

Morgan Murphy, Wade, Emily Press and Emilee Curran finished just outside the top 10 in the women's 15 and over 4x100 medley relay (4:58.43).

Bathurst Swim Club head coach Josh Stapley said the build up towards the event was far from smooth, which makes the results all the more satisfying.

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"I was blown away with how well they did. It's been a tricky lead in over the last three weeks with about six of the 13 who qualified were carrying injuries coming in so it was a bit touch and go getting everyone to the start line," he said.

"They showed a lot of dedication to work with me and move things around to get themselves fit and ready. They got there on the start line, except for two of them, and they swam great considering that.

"We came away with 30 PBs out of 36 events.

"We're only five weeks into our new program and we've still got seven weeks until we get them to their peak, performing like they did at country. It makes me excited to see what they can do at state when they hit that peak form."

Almost every swimmer returned home with personal bests.

Hamer enjoyed a seven-race PB sweep of all his individual races, as did Johnson from his three individual events.

Austin Letran lowered his best mark in two events.

Sienna Whalan came incredibly close to lowering her best women's 12 and under 200m breaststroke mark.

Those who missed out on reaching a state championships qualifying time will have one more opportunity next month before the main event on August 23.