JETTS 24 Hour Fitness at Castle Hill will host a Marching for Miracles 24-hour treadmill challenge for the Lincolne Innis Trust this week.
The gym wants to raise $10,000 for Lincolne Innis of Kellyville, who became a quadriplegic in January 2012 when he dived into shallow water and damaged his spine.
His father Grant said Lincolne spent most of a year in intensive care and the spinal unit at Royal North Shore Hospital, and time at the Royal Rehabilitation Centre at Putney.
Major modifications to their home were necessary before he could return to live with his family.
This, along with the cost of wheelchairs, hoists, a hospital bed and other necessary equipment, including the costs of therapy, medical treatment and medications are a significant financial burden.
"Lincolne will face significant hardship of various kinds for the rest of his life," Mr Innis said.
"To alleviate his burden a trust has been established, the Lincolne Innis Trust, to provide financial support."
Jetts management gave his family free fitness centre memberships.
The 21-year-old has been carrying out part of his rehabilitation at Jetts Castle Hill through the Walk On project run with the help of Sydney University and Ware K Tremor Therapy.
Club manager Laura Appleyard says she hopes the funds raised will help Lincolne get access to treatment like the Ware K Tremor Therapy, which was successfully used on Paralympian John Maclean, who was a paraplegic for 25 years.
But it is expensive.
Members of the trust also hope to send Lincolne to Project Walk in California next year.
The trip could cost about $100,000 for six months.
■ The 24-hour treadmill challenge is on Friday and Saturday from noon at the fitness centre.
■ A barbecue, games and raffles will be held on Saturday, noon-1pm.
■ Details: 7-13 Victoria Avenue, Castle Hill.
■ Donate: Cash donations can be made on the day or for online and PayPal donations directly to the Lincolne Innis Trust — account, Lincolne Jonathan Innis. BPAY biller code 667022. Reference number 961844156.