Brain damage means that Multiple Sclerosis sufferer Justin Kendell can't walk further than half a kilometre.
But next week, he'll set off from the foot of Snowdon in North Wales, to cycle 2,200km in a five-week trip to the Pyrenees in southern France.
"I have limited feeling in my legs, so I don't know where they are all the time. Even if they're a little bit tired, they have a life of their own and that makes it very difficult to walk."
Diagnosed with Multiple Sclerosis in 2013, he thought his cycling days were over.
"Riding bikes had been my passion since I was a teenager living in Snowdonia," he says. "But I gave up riding soon after my diagnosis. It was my daughter, Sioned, who persuaded me to get back on my bike. I was full of doubt but she pushed me to try – and it was wonderful! It was amazing to be able to move and not feel like I was about to fall over at any moment. And I could ride where I couldn't walk anymore."
Justin will be riding from his teenage stomping ground of the mountains of Snowdonia to the Pyrenees mountains close to his current home in Aveyron, southern France.
Justin is raising funds for the Multiple Sclerosis Trust, and hopes his ride will inspire others with potentially life-impairing conditions to think about what they can do, rather than focusing on the things they can't manage anymore.