As Major Ed Orszulak prepares for a monumental trek to raise funds in support of Camp Quality, he knows the challenge ahead is "a walk in the park" compared to that faced by children dealing with cancer.
Major Orszulak and ACT Fire Rescue senior firefighter Sebastian Boehm will depart from King George Square, Brisbane, in late July, travelling 2720km in 70 days before arriving at Melbourne's Federation Square.
"The plan is to do, on average, about 48 to 50 kilometres a day," Major Orszulak said.
"I've built in 13 rest days into the total walk program. We're going to utilise a mixture of Army Reserve depots and volunteers' accommodation along the way."
Their journey is part of the Camp Quality annual fundraising campaign, Big Walk for Little Kids. Funds raised will help Camp Quality bring positivity, fun and laughter to children facing cancer.
"I've been a volunteer with Camp Quality for 11 years now," Major Orszulak said.
"A friend suggested it would be a good thing to do. He told me it's a really good organisation to be involved in, and he was right.
"Back in 2016, I was part of a group of seven volunteers who walked Mount Kilimanjaro for Camp Quality. In that instance we raised $35,000; this time we're hoping to raise $250,000."
Such an ambitious endeavour requires a great deal of support behind the scenes and along the way.
"We'll be joined by other people along the route, as they're available," he said.
"We'll have a support crew, including an Army Reserve cook, and I'm currently negotiating for a medic from 2nd Brigade.
"My biggest challenge will be making sure I can get my 50-year-old body through the walk. In particular, you know, an infantrymen's knees, and back.
"But it's going to be my feet. Managing my feet will be the biggest challenge. My secret is making sure I always wear the best socks and I've been able to secure a sponsor, Injinji Performance Products, who are providing these amazing toe socks."
Unfortunately, his preparation has been hampered by surgical procedures.
"Yeah, it's been disrupted. In October last year, I had to have a right hip replacement," Major Orszulak said.
"My surgeon is very happy and supportive of me doing the walk. Structurally, my hip is stronger than ever. And he's looking forward to watching me go."
He's also had a procedure on one of his knees.
Major Orszulak admits his trip wouldn't be possible without the backing of his chain of command at Headquarters 1st (Australian) Division and at home.
"I've got amazing support from my partner, Karen, and family, who will be joining me and supporting me as much as they can," he said.
"They'll be sharing all my Facebook posts so that my audience is increased. And my son is hoping to join me for parts of the walk and certainly for the last week during the school holidays."
Major Orszulak can be supported through the Camp Quality website.