The 33 year old Byron Bay man's 15,000km 'marathong' around Australia started from Sydney in February and continued as he arrived in Port Macquarie on March 8.

Ferris ran in to Port Macquarie on March 8 with a flashing, honking motorcade escort by local tradies after travelling by foot about 33kms away through Camden Haven.

"There was some good Ironman hills there and so far I'm on my third set of thongs," he said.

"While I'm running I'm thinking about my cause, how important it is because farmers in Australia are in drought.

"It's about bringing the importance to people about the seriousness of the farming situation at the moment.

"I'm doing it for the kids as well, when I run past they come out to the side of the road and say hello."

The famous long distance trekker has previously run from Sydney to Brisbane and Sydney to Melbourne in gumboots.

He also became the first Australian to complete an unassisted 3000km run from Townsville to Darwin, without a support car and raised around $7000 for the Royal Flying Doctor Service.

He has also ran from Sydney to Byron Bay across 24 days in 2015.

"Started running from Sydney 16 days ago, so far there has been some rain and a little bit of heat," said the former Hawaiian Iron Man.

"Everyone has been supportive.

"I'd like to give a shout out to Oasis on the River, who gave me free breakfast and the Royal Hotel."

"No sponsors so far but I'd encourage bigger Australian companies to get behind us and support farmers who have supported them for years."

Ferris is no stranger to the great out doors, growing up in a farming family near Byron Bay at Kyogle and completing numerous long distance events.

"My day varies and depends if I'm packing away my sleeping tent wet from the night before," said the self described Australian runner, coffee and nature lover.

"In the morning I eat muesli, all natural food and am running between 40 to 80kms a day.

"I'm also going to be doing the 21km half marathon for the Port Macquarie Running Festival on Sunday.

"Shout out to my escorts from locals supporting me and helped me raise over $2000 in two weeks."

The former Australian Army man got his inspiration for the Marathong run from watching a documentary about Mexican runners travelling in sandals or barefoot.

The trip has already produced some great highlights with Ferris breaking the axle on his support trolley twice and some memorable encounters.

"Snapped the axle twice and I've had an injury with a ligament in my foot which has just come good," he said.

"On the way I've met a 74 year old cycling from Sydney to Cairns and a guy asked me if I'd like to do a nude photo-shoot."

People can pledge their support for Ferris at http://runferrisrun.com/ or visit his Facebook page at www.facebook.com/runferrisrunn/