The Bullrush Rally last visited the city in 2016 drawing a large crowd of onlookers and organisers say next year's event will be triple the size.

Founder Marko Seider said they had to postpone the event for the past two years, but the rally in March was now expected to go ahead.

In 2016, the rally route made its way from Adelaide to Sydney through Warrnambool, but next year it will go the opposite way, albeit a little shorter.

The rally will start in Melbourne on March 1 and make its way to Adelaide via Torquay, Warrnambool and The Bend.

"It's a great drive with the Great Ocean Road," Mr Seider said.

"We're fully sold out. We're about to release an extra 10 tickets to make it the biggest rally that we've done.

"There will be 60 cars.

"Pretty much every single make of that supercar, performance market is represented."

The range of supercars include a Ferrari 458 Spyder, Lamborghini Hurricane and Aston Martin.

"Two Ferrari 812 superfast, countless Porsches, pretty much every single Porsche in the current line-up," Mr Seider said.

"We actually have one entrant who is in an Caterham 458 S which is light a tiny little British handmade track-only car."

Mr Seider said they were only designed for a racetrack but the owner had decided to take it out for the long haul.

"It will be a great thing to see," he said.

"He will be in his goggles the whole time."

The first ever Bullrush Rally was held in 2015 and over the years it has raised more than $100,000 for various children's charities.

"This year we are leaning towards a mental health charity," he said.

"We haven't finalised that just yet."

In 2016, the rally made the Lady Bay its overnight stop and drew a large crowd of onlookers.

"Next year we will be doing it in a much bigger way because we love to see the crowds and the kids come out," Mr Seider said.

"It's really cool for everyone.

"Our arrival event, all the cars roll in and, contrary to popular belief, a lot of the owners are very open with their cars so we get a bunch of kids sitting in the cars."

Mr Seider said he was glad his event could also bring a boost to the tourist economy in the wake of extended pandemic lockdowns.

"I'm just excited to be able to do something," he said.

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