GIPPSLAND medical student Sam Alexander will complete his epic solo fundraising horse trek this weekend.

Sam and his three pack horses have ridden almost 4000km of the Bicentennial Trail to raise money for the Royal Flying Doctors Association.  

READ MORE: Sam's trip north for royal flying doctors

The 24-year-old left from Healesville, Victoria in February and will finish his trek this Saturday, in Koumala, south of Mackay in Queensland.

The Monash Gippsland medical student posted on his Heading North 2012 Facebook page today he had two more days to go and was 'looking forward to meeting everyone at the end in Koumala'.

Sam told The Weekly Times back in February he wanted to have a gap year with a difference and was motivated to do the ride to promote rural health issues.

"My overall goal is to use the ride to promote the importance of medical care in rural Australia and raise awareness of the important work done by the Royal Flying Doctor Service," he said.

During his trek Sam negotiated some extreme climatic conditions, including a blizzard in Kosciusko National Park and 45C days in outback Queensland.

RFDS Victoria chief executive Scott Chapman congratulated Sam on his effort, saying it was a real test of his resilience.

"Sam has created a lot of interest with the trip, raising funds for our services, and awareness of the Flying Doctors," Mr Chapman said.

"Just as importantly he's raised the need to continue working for better health care in regional, rural and isolated parts of Australia.

"It's the support of hard working and generous people like Sam that allows the Royal Flying Doctor Service to deliver health care to people across Australia."