Program co-ordinator Kath Walsh said experiencing the thrill of racing against your mates was something many of the kids who came to SibsClub had not done before.

"It was a great day filled with lots of excitement and adrenalin-filled fun," she said.

Volunteers from both the BMX club and SibsClub assisted the siblings, aged between five and 12, navigate the track, providing guidance on bike safety and racing know-how.

BMX club secretary Andrea Dallinger said the community day helped to showcase BMX racing and what belonging to a sporting club was all about.

"Getting kids out on their bikes, challenging them to try something new and encouraging them to push themselves is everything in the sport of BMX," Ms Dallinger said.

Ms Walsh said it was particularly important for the siblings as they often took on caring roles within their families that were way beyond their years.

"Getting out and doing something out of their comfort zone, where they are just focused on being a kid and having fun, is vital for these children," she said.

"Life can be pretty serious when you help care for someone with a disability and having the opportunity to 'just be a kid' every now and then really helps the whole family.

"We are always looking for unique and adventurous activities for our Saturday SibsClub and we are eternally grateful to Southlake Illawarra BMX Club for their support and generosity in hosting this Track Active Day.

"The people at Southlake Illawarra were so good to us on the weekend. They put on a sausage sizzle for us and gave each child an ice block, lollies and a chocolate Santa, which was just lovely.

"We had a few spills and stacks too but the kids who were helping out with the day were just brilliant and so supportive."

Further information about CatholicCare's Family and Sibling Support Program is available at www.catholiccare.dow.org.au or on 4227 41122.