Rebecca Bailey, Shani Malone, Tracey Sgroi, and Chelsea Richens will test their physical limits in Sydney from August 25 to 27, when they participate in the Oxfam Trailwalker.

The 100 kilometre endurance challenge gathers teams of four to trek in the bush, completing the course within 48 hours.

Not only is this Ms Bailey’s first time participating in the Trailwalker, but she is also relatively new to the world of fitness challenge events.

The Muswellbrook-born woman began running in April last year, before completing her first half marathon in June.

Her involvement had obviously sparked a passion for the events, causing her to return for another half marathon in August, followed by a New Zealand 42 kilometre trail marathon in November.

Now, alongside her Trailwalker teammates, she has her sights set on the grueling journey ahead.

“My partner and I were looking for a challenge, something that we could do for both fun and fitness, and we settled with running,” she said.

“I was so unfit and couldn’t run 500 meters without my asthma affecting me.

“I am now completely asthma-free, and plan on possibly trying out competing in an ultra-marathon next year.

“This will be a challenge for us in many ways, but we are ready to do something epic to fight poverty and injustice throughout the world.

“With the help of our walking poles and our support crew, we are determined to start together, stick together and cross the finish line together.”

Oxfam Australia works with local communities to help them create their own sustainable solutions to poverty.

It promotes education, ensuring access to clean water, teaching skills to grow food and advocating for their basic rights.

To support the team, or to donate, visit https://trailwalker.oxfam.org.au/my/team/walker/290572