The fundraising event will help the Henderson Family travel to Boston where the world's finest doctors will be able to give Harry answers.
Harry's Dad Ben Henderson said the event will be a fantastic day for families to enjoy.
"The Colour Run will be amazing, lots of colour for the kids, lots of laughs," he said.
"It's shaping up really good, we've got a jumping castle, we've got a ride-on train, we've got a big blow up soccer dart board which was also donated,
"We've got a blow up soccer field, some confectionary stalls, ice cream vans, barbecues... there's a lot to mention."
The family have a fundraising goal of $100,000, with over $14,000 already donated.
More information can be found in the events section on our website or the 'Brighten Harry's Future' Facebook Page.