Among those planning to take part in the half marathon is Jason Ciril, 18, from Sheffield, who will be running it for the first time after being diagnosed with functional neurological disorder (FND) last year.
The condition affects the way the brain sends and receives signals, which can cause symptoms such as weakness, tremors and seizures.
It is not caused by physical disease or damage and has no definitive cause, although it is believed to often be linked to mental health disorders such as depression or anxiety.
According to Sheffield Teaching Hospitals, FND occurs in about one quarter of neurology patients in the region, with most experiencing temporary symptoms, but some cases being more severe and longer lasting.
Ciril, who also has a spinal condition called spina bifida, spent four months in hospital after FND caused him to have repeated seizures and become paralysed in his legs.
“In May, I got out of the hospital and I was in a wheelchair. I had to be hoisted into my bed and I started to think this was my life now,” he said.
“I’d got nothing, I couldn’t do anything anymore or be there for my brothers.”
