Fearnley, 28, finished his 10-day trek just a little after 9am PNG time (10am AEDT) today.

Fearnley wrote on his blog a little after 11am: "we made it. sitting at owers corner enjoying a couple of beers. mum and dad are here. amazing experience. i’m so happy we’re here."

A few minutes later he wrote: "all the aches are gone. at least for an hour or so."

Fearnley said there were moments he thought about quitting along the 96km track through mud and rugged terrain.

"Mate, I just was hurting, it was the toughest thing I've ever done,'' he said.

In emotional scenes at the finish, Fearnley was surprised by his mother and father Jacqueline and Glenn, who had travelled from their home of Carcoar in central NSW, to share a few tears and couple of bottles of champagne with their youngest son.

"It's been a very big day and we're glad it's over,'' his mother said.

Track veteran and Kokoda Spirit team leader Wayne Weatherall said it was the most amazing effort he'd ever seen in his time trekking.

"To call him a superhero or superhuman is not too far from the truth,'' he said.

Fearnley, the four-time New York wheelchair marathon winner, had to drag himself on his hands along the famous track but had support from 15 family members plus his team of porters and guides.

Fearnley left on November 8 for the 10-day challenge of dragging himself on his hands over 96km of Papua New Guinea's infamous Kokoda Track.

The 28-year-old athlete, supported by 15 family members plus his Kokoda Spirit trek team of porters and guides, arrived at Owers Corner as expected this morning.

Fearnley's motivation for Movember is "To change the face of Men's Health, while taking on the New York Marathon and crawling the Kokoda Trek with the support of 15 family and friends."