Rothwell, who underwent open heart surgery in 2022, shared his determination to combat dementia, having lost loved ones to the condition.
While talking about his journey, he said: "I’m not frightened of anything except getting dementia. I've seen the heartbreak that it causes. Sadly, I've lost two people that I love to dementia, my brother-in-law, Roger, during my 2020 race, and my best friend only a couple of months ago.
"It's devastating. I don't want others to go through it, so I am determined to help Alzheimer's Research UK change lives. I've renamed by boat 'For A Cure' because that's what I'm racing for. Thank you very much for your donation. It really means the world to me and to Alzheimer’s Research UK."