Paul Madden is going for a walk - a long one.
The IT project manager from Victoria Park plans to trek the 1000km Bibbulmun Track in under 16 days.
The Bibbulmun Track Foundation says the average time taken to walk the track, from Kalamunda to Albany, is six to eight weeks.
Mr Madden, 47, wants to beat his friend Uwe Thiel, who, along with four work colleagues from Casuarina Prison, walked the track in about 16 days and 16 hours in 2005 in support of Princess Margaret Hospital.
"Uwe has been extremely forthcoming with advice," he said. "He's been the closest thing to a coach or a mentor that I've got." Mr Madden, who volunteers at a soup kitchen on Saturdays, wants to raise awareness of homelessness.
The intensive hike requires Mr Madden to walk 60km a day at a walking speed of 4km/h, which means he must walk 15 hours a day.
Mr Madden, who started training this year, said he had no need to hurry.
"The analogy of the hare and the tortoise is very true, I'm basically a tortoise at this," he said.
Mr Thiel said his friend had a "competitive" chance of beating his record and he wished him well.
"I suppose the difficulty will be if he actually beats it. My friends and I will probably be out there having another go," Mr Thiel said.