Cycling has become an addiction to the Wanganui local, who lost a total of 25kg, and is ready to tackle the challenge for the first time with the help of new friends.
"I met Bron and Rob Baker, who were cooking the barbecue at last year's event when it went through Wanganui.
"I mentioned how I would be keen to enter this year's challenge and they kindly offered to be my support vehicle."
With that offer on the table, her family's full support and a huge weight loss under her belt, Cain had no excuse to not enter.
The challenge is now very much established on the cycling calendar as one of the 'must do' cycling events for riders of all abilities, with each day split into two stages.
As well as family, Cain has the undivided support of her friends from the Wanganui cycling club, as well as work colleagues at the Department of Corrections.
"The ladies from the club have been amazing, they let me know I can do it and it makes the world of difference," she said.
"Work has also been extremely supportive of my cycling ambitions by being flexible with my hours to work around training.
"If it wasn't for all of this support I don't think I would be able to achieve what I have done so far."
On Tuesday morning at 8am the tour will depart Palmerston North and bike 79km to Hunterville.
That afternoon they will then head to Wanganui with the first riders arriving around 2.30pm at Eastown Rd.
A prizegiving will be held that evening at the Cooks Gardens Velodrome.
