Robertson is busy preparing for the Rottnest Channel Swim, one of Western Australia's most iconic events and a world-renowned ocean swim.

He hopes to raise $10,000 for Angland, who was left a quadriplegic after a race fall in Hong Kong in November 2018.

Robertson first became aware of the swim when competing at national level in Perth as a teenager and is something that has always been on his radar.

"I've always had it in my mind that it's something I'd like to do, as a challenge, when I was older," Robertson said.

"I'd never thought too much about it again and then 12 months ago, I saw that it was happening. When I first thought about it 12 months ago, it was too soon to do it last year.

"So I came up with the plan 12 months ago and have stuck to it. Erin and Tye have kept me on top of it as well."

Robertson got back in the pool in late August, initially training two or three times a week.

He had to qualify for the swim, something he achieved last month in Canberra when completing a nine kilometre event in Lake Burley Griffin.

He has upped the ante of late, with the help of Wagga's Commonwealth Games gold medallist Brad Kahlefeldt, and his wife Radka.

"I've really stepped it up the last few weeks," he said.

"Brad and Radka being home for the last month has been a massive help. It showed me, swimming with Radka, and Brad writing my program, where I needed to be."

Robertson is now training daily, swimming four kilometres most days, and will test himself out on Friday with a 10km swim at the Oasis.

He will finalise his preparation with the five kilometre Cole Classic in Manly next month, before flying to Perth for the main event on February 22.

Robertson said he is far from confident.

"No, not really. I wouldn't say I'm confident. I'm quite nervous about it," he said.

"And the closer it gets, the more nervous I will be."

But Robertson said there is no shortage of motivation and only has to think about his best mate, who has been by his side since their school days in Wagga.

"Obviously I've been pretty close the last 14 months since Tye had the fall, and obviously before that, and the pure reason I'm doing it is for him," he said.

"I'm lucky enough to know him extremely well and what happened to him and how he's responded to it puts everything in perspective in life. People could learn a lot from how he has responded from that, and not just Tye, but Erin and the kids as well.

"That's how I look at it and whenever I hit a wall that's the person I think about. Seven hours swimming in the ocean is nothing in comparison to how he takes every day. He was resilient when he was riding, you obviously have to be with that job, but how he's handled everything since has taken it to a whole new level.

"I beam with pride when I see him working. To be back working within a year, in his work with Channel Seven, is massive."

To donate to Robertson's campaign, visit Rottnest Channel Swim For Tye at mycause.com.au

READ MORE