Narromine's Nathan Wilson will for the second year be putting his mettle to the test in the Kidney Kar Rally, to help support kids and young people affected by kidney disease.

"It's a great cause," Wilson said.

"A mate of mine from Dubbo got me into the rally, I always wanted to do one and a heap of locals helped me do it.

"If you can have a bit of fun, raise some money and do stuff with other crazy individuals it's a good thing."

This year Wilson is supported by his friend Gordon Larkins from Tottenham and together they will journey along the Capricorn Coast, travelling from Port Macquarie to Armidale in the nine day event.

The round trip will cover approximately 2300km and the drivers will be stopping at towns along the way to try and encourage locals to support the fundraising effort.

"It's a lot of fun, I get to go on a lot of roads I don't normally go on because it is some rough bashing," he said.

Even though the event won't formally start until August 9, Wilson and his team, 'Ball Joint' have already raised over $5,500 this year, which he said has been 'incredible' since times have been tough.

"It is incredible in a drought, we didn't know how we would go," he said.

"I did think we were going to struggle to get the minimum, but we've done over that, which is quite good."

Wilson thanked his sponsors including Narromine Auto and Airconditioning, Walkers Service Centre, JJ Roberts Transport Narromine, D/Comm pty ltd, John Davidson Earthmoving Narromine, White family farming, Waitara Angus, Woods Family Farming, Narromine Auto Repairs, Jemalong Wool, 1800-Pooman Waste services and Narromine Electrics.

He also especially thanked Narromine Auto Repairs for their help getting the car up to scratch.

"Narromine Auto are our mechanics, they've done a heap of work on the car," he said.

"We had trouble with the car last year, it was sitting in my shed for probably 26 years. Anyway we had a few dramas with ball joints last year.

"We've got it in the workshop now ... we won't have any trouble with Ball Joints."

This year, organisers Kidney Health Australia are aiming to raise over $500,000 dollars to assist children and young people who are battling kidney disease.

Chief Executive Officer of Kidney Health Australia, Chris Forbes, described the rally and fundraising efforts as 'big kids helping little kids'.

"Our target this year is $500,000 but we'd love to smash it - the more funds we get, the more we can pour into programs to help children and young people deal with the physical, emotional and psychological impacts of kidney disease," Mr Forbes said.

"We've had fantastic support from the Rally drivers for the past 31 years, raising over $15 million in total, and helping countless kids from all over the country deal with the daily challenges of living with this debilitating disease."

"Alarmingly, 65 people die with kidney related diseases every day, and currently 1.5 million Australians are unaware they have early signs of the disease. So, the rally is a great platform to connect with and educate local communities about kidney disease and the importance of prevention, early detection and support."