Perth to Sydney marathoner details monster achievement after raising more than $1m

A marathon runner who completed a mammoth journey from Perth to Sydney and raised more than $1m has described his struggles along the way.

A marathon runner who undertook the mammoth journey from Perth to Sydney on foot has revealed just how hard the trek hit him.

Nedd Brockmann, 23, conquered more than 3800km on his way to Bondi, where he arrived on Tuesday greeted by hundreds of thrilled supporters.

But on Wednesday, Mr Brockmann told the Today show that it wasn’t all smooth sailing over the 46 days of his run and detailed his injuries along the way.

“Day three was pretty hard because of the sweltering rain, the winds, oh my God, the legs, and I had tendinitis in my shin which they treated as a stress fracture and you have to immobilise it in a boot. I got a decision to cortisone shot it twice,” Mr Brockmann said.

He said he was forced to drive 14 hours so he could get a scan on his leg and “see what was going on”.

“Luckily, it wasn’t a stress fracture,” he said.

Nedd Brockmann’s emotional arrival in Bondi. Picture: Richard Dobson

After receiving the news, Mr Brockmann then drove 14 hours back to his path and, at 5am, ran another 100km.

Mr Brockmann said he thought “about everything” when he ran and broke down the journey during the “insurmountable kilometres”.

“You think about everything, you put music in, get sick of music and take it out, listen to podcasts and they're boring or they're great, but it was nothing to do with time,” he said.

He said trying to overcome the challenges was hard to explain, but his efforts felt like war.

“It's hard to explain to someone who've never been there. It’s almost like I’m going to war each day and I've never been to war, but I feel like that is how it would feel,” Mr Brockmann said.

“I would get stretchered out there before I quit and that was kind of the way I made each day happen. All of a sudden we’re here and then as you saw in Bondi it was just out of this world.”

Upon his arrival to the finish line in Bondi, Mr Brockmann celebrated with hundreds of fans and supporters and even engaged in a beloved Aussie tradition – the “shoey”.

He deserved a celebratory drink. Picture: Richard Dobson

“I knew it touched a lot of people but not to that extent,” he said.

Mr Brockmann said in the weeks before, he’d raised more than $400,000 to battle homelessness in Australia, but that price tripled and soared to $1.3m for the cause.

His chosen cause, Mobilise, helps people in Australia battling homelessness, and Mr Brockmann received donations from more than 20,000 people.

“It was mind-blowing to see a week ago we were at $450 to 500 (thousand) and in over a week we were over a million. The change it will make to homelessness in Australia will be unbelievable.”

His incredible journey, in which he often ran more than 80km per day, began on September 1.

Australians all over the country have praised Mr Brockmann for his efforts, some even calling on him to be Australian of the Year.