The money raised would go to the non-profit One Girl's educational scholarship programmes. Every $300 would provide a girl in Sierra Leone a year of education.
According to the non-profit a girl who is educated is three times less likely to contract HIV/AIDS, will marry later and have fewer, healthier children. In addition every year of extra income will increase by 10 to 25 per cent.
It has also said a girl born in Sierra Leone is more likely to be sexually assaulted than attend high school.
With the help of a local guide, Miss Cassidy will spend five to six hours a day walking the sponsored trek and planned to reach the base camp on the 1st of January.
All the money she spent on the trip would also go to the Nepalese community, which she said had been struggling with the reduced tourist traffic after the 7.8 earthquake earlier this year.
She admitted to being a little bit nervous, but more about the cold and the chance of getting altitude sickness.
She wasn't too worried about the physical trek, as it was a well-worn trail and she also spent each weekend in Hong Kong doing part of the 100km-long Malclehose Trail that winds through the area's more mountainous regions.
"I hope it's going to be achievable."
To help Georgia Cassidy educate a child in Sierra Leone go to: http://my.onegirl.org.au/georgia-cassidy
About One Girl
• An Australian-based organisation
• Its mission is to educate one million girls across Africa by 2020
• It is currently working in the Bombali, Tonkolili and Freetown districts of Sierra Leone