James ready to stroll the Nullarbor

To the passer-by James Brooman makes for a strange sight - a 35-year-old man in joggers pushing a baby stroller across the Nullarbor Desert.

But the British national is determined to complete a task he set himself several years ago - making the 3935km journey from Perth to Sydney on foot and without support.

James stopped in Kalgoorlie-Boulder on Monday to enjoy a day of rest, having completed the 600km trip from Perth in 12 days.

The desolate plains of the Nullarbor now stand before him, a challenge James has planned for meticulously to ensure his water supplies do not run dry hundreds of kilometres from civilisation.

Last year James sat behind a desk five days a week, working as an investment banker in San Francisco.

But after two years of business school and four years on the job, he had an epiphany - spending his life chained to a desk was not how he wanted to live his life.

It was then that he left his job to scale the treacherous slopes of Mt Everest.

But as James tried to adjust to the conditions of the mountain after reaching the first base camp, an avalanche killed 16 Sherpas and forced the cancellation of all climbing groups.

After returning to his home in England, he set his sights on a slightly less dangerous but equally arduous task - running all the way across Australia.

James purchased a baby stroller, which he used to store his supplies - water, food, different pairs of shoes, a camping stove, fuel, maps and a tent.

The device has attracted some attention. Several people have stopped to check on the health and safety of the baby they believe is hiding under the sun shade.

"I've had three or four people ask me that. One woman in Perth actually pulled the car up and stopped and said: 'Oh my God, you're going to kill that baby,'" he said.

Despite heading out into the desert with no support, James is not worried about crossing the Nullarbor - as long as he takes enough food and water to last him until the next roadhouse.

So far, the 35-year-old has given the experience rave reviews.

"You meet amazing people, you get to see the wildlife," he said.

"People give you food. Some guy gave me a couple of cold beers out of his car. So far it has been well beyond my expectations in terms of meeting good people."

James hopes to complete the trip in 75 days, a little longer than the official world record of 67 days and two hours.

Though he did not start his trip for charity, James has been using a universal app to raise money for the World Wildlife Fund.