After playing in the Country Rugby League women's championships earlier this year for the Greater Northern Tigers, the Glen Innes trio will take the field for Central North in Country Rugby Union's event this weekend.

The trio play rugby sevens for the Inverell Highlanders in the Central North competition, but this weekend's championships in Tamworth will feature the 15-a-side version of the sport.

Byrne has played 15-a-side before but only at a higher level than the club competition.

"I have only played rep 15s," she said.

"It's very different to sevens because there isn't as much room to move, the scrums are a lot bigger and the forwards have to pick and drive a lot to make metres then shift it out the back, whereas sevens is a game of primarily just shifting the ball around."

The tournament will be Byrne's third Country Championships for the year after her rugby league feats as well as playing a role for Central North at the sevens championships in Armidale in March.

While the trio's previous campaigns give experience at playing at a higher level, they will have to adjust to playing with more people on the field.

"Playing rugby league with 13-on-a-field and 15s do complement each other a bit, allowing to get a better idea of how much room you have to move and what kind of plays etc. you need to do in order to open up space for the backs," Byrne said.

"But in saying that it they are both two very different games.

"In 15s, to gain possession, you don't just get six tackles, the teams keep coming at you so you need to work very hard in defence and clear out well."

Although she's been there before, Byrne isn't sure what to expect.

The women's game is expanding and more players with huge amounts of players signing up all the time, unearthing more stars.

"I'm looking forward to what the competition has to bring," she said.

"Some years teams continue to have the same dominant players and other years they come out with a completely new team which is exciting because you don't know what to expect."

The players will also by vying to impress selectors for the NSW Country Corella's team.

Byrne has aspirations to play in the country side but is more focused on Central North's campaign.

"I'm really just hoping to win a game or two," she said.

"Especially playing alongside a lot of my Highlanders teammates and of course enjoy the tournament with potential to go further."

Their will play on Saturday morning against powerhouse teams Central West and then Illawarra.