Ms Hand, a volunteer for Radio Lollipop, the charity supporting children in hospital, said the Register�s Annual Great Bicycle Ride Across Iowa would attract about 10,000 cyclists to the July tour.
They are preparing to conquer 1000km in just seven days to support the vital service.
�I have volunteered at Radio Lollipop for three years and we decided to take this opportunity to raise as much as we could to help out,� Ms Hand said.
�I am on the management team and look after fundraising as well as the Sunday Funday team at Princess Margaret Hospital.
�We also have a great team at Joondalup Hospital that I help out with too.�
She said it gave young patients a voice during their stay, allowing them to request their favourite songs, win prizes and hear themselves on radio.
�Those activities give youngsters a haven of normality in the hospital day which in other respects is strange, different and often scary,� Ms Hand said.
�Radio Lollipop believes in the healing power of play, providing smiles and laughter to children at a time when they need it most.
�It also turns the big 30 this year so I wanted to do something to celebrate it and give back.�
She said Mr Whitby completed the Iowa ride about two years ago and know what to expect.
He managed to raise about $2000 for another children�s charity which they are hoping to match this time.
�I�m hoping it�ll help children who need help when they�re at their lowest point. No child deserves to be miserable,� she said.
They are both riding to work twice a week, which they will increase closer to the date, and are completing a 100-150km ride each weekend.
�We are looking forward to meeting more of the locals who are welcoming, warm and very generous in letting us stay in their towns and houses without asking for anything in return,� Ms Hand said.
To donate, visit give.everydayhero.com/au/ragbrai- lollipop.