One Australian father has done just that.
Last month the Shearman family's efforts to crowdfund a trial of a cerebral palsy therapy called the TheraSuit featured on 7.30.
The day after the story aired, Michael Shearman, his son Max and a team of family and friends flew out for Papua New Guinea to begin their adventure.
"It was probably one of the most amazing experiences in my whole life," Mr Shearman said.
"Papua New Guinea is one of the most beautiful places in the whole world. The landscape was incredible, the people were amazing."
For Max, the best part was playing with other children in the villages they camped in along the way.
Mr Shearman said Max loved the adventure.
"Max did absolutely amazing. He made it really easy for me."
Kokoda is famously gruelling, and carrying a 27-kilogram boy on your back did not make it any easier.
"Parts of it were extremely hard. A lot of ups, a lot of downs," Mr Shearman said.
"There was times when it was difficult, and you are just exhausted. [But] I always knew I was going to make it."
When they reached the end of the track they were greeted by villagers singing them a welcome song.
"It was just the most amazing feeling of elation and excitement," Mr Shearman said.
"Just look back over the Owen Stanley Ranges and think, 'We walked all that way, 96 kilometres'."
Plans to do it again next year
Walking the Kokoda Track was part of Mr Shearman's attempt to raise money to self-fund a trial of the TheraSuit for 15 children next year.
They have so far reached half their target amount.
"We have still got to raise another $200,000," Mr Shearman said.
"We have enough that we can start the trial. We will be still fundraising throughout this year and next year to make sure that we have paid the bill at the end of next year."
Mr Shearman has already signed up to walk Kokoda again next year, this time leading a tour group.
And Max wants to go back too.
"I would definitely go tomorrow," Max said.
"What would you do differently?" Mr Shearman asked him.
"I would run the whole track!" Max said.