On April 29 Michelle Williams will put aside home comforts for 10 days and put all faith in her legs and trusty bicycle when she rides 1400 kilometres from Sydney to Melbourne.
She's taking part in the Salvation Army's Red Shield Ride, which raises money for disadvantaged people.
"As we ride, every pedal stroke we are helping other people," the Glenbrook resident said.
"We are trying to raise the money so that we can help the lives of other people who need it more than us."
It's been a year of intense training, to prepare for days riding up to 175km and more than 16,000 metres elevation over the epic ride.
She's been training six days a week in preparation, aiming to cover at least 200km a week.
"I've spent 128 hours in the saddle this year and [completed] 30,000 metres of elevation," Ms Williams said.
"It's going to be emotional, backing up day after day."
"I've always wanted to ride from Sydney to Melbourne, it's always been on my to do list. The opportunity to achieve a goal I wanted to achieve and help other people was too good an opportunity to give up."
She'll complete the ride with her partner Jeff Tippett and at least 25 others.
Ms Williams is an education support officer at Sydney University's Nepean Clinical School and she also teaches cycle classes at Springwood Aquatic and Fitness Centre.
To donate: https://redshieldride.everydayhero.com/au/michelle.