Dozens of children and adults dressed in the costumes of their favourite superheroes and set off from Apex Park for the annual Superhero Walk for Autism.

Two mums know all too well that having children with autism provides challenges, but say the little milestones are what keeps them going.

Tracey O'Mahony had brought her daughter Kasey who recently turned 16.

"She was diagnosed late at the age of six and a half," she said.

"Isolation is one of the challenges and you lose a lot of friendships because people are not aware of the hardships that we go through and how hard it is to get someone to the movies or the cafe."

Ms O'Mahony said while it can be tough, the small victories keep a smile on her face.

"Recently she had her 16th birthday party and watching her group organise it their own way and cook their own food and constructed their own routine and seeing them smile and not be judged was amazing," she said.

Another mum, Leanne Sainsbury, who has a 15-year-old son with autism said the walk provides a place for everyone to be themselves.

"Autism can be a hidden disability sometimes," she said.

"Today is all about being yourself and being comfortable. There are lots of challenges for families that are ongoing."

Ms Sainsbury said it can be heartbreaking at times and can be exhausting, but there are also moments full of joy.

"The rewards, any family will tell you the same, outweigh the challenges," she said.

"The families here are always ready to show support."

Ms Sainsbury said a recent victory was when her son Bryson started eating more foods.

"He is turning 16 and be eating on really simple foods and now he is eating lasagne and roast dinners and it could not make me happier," she said.

"He is also a lot more social but a lot of work goes into that. There are also shortages with accessing resources with the Riverina, even with NDIS."

Jessica Murray, secretary of the Wagga Autism Support Group, said the weather and turnout had been fantastic.

"Over the six years, it has gotten bigger and bigger with more community organisations involved," she said.

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