Darren Walker is raising money to fund research into pseudomyxoma peritonei (PMP).
He said he wanted to complete this challenge while he is still able.
"This is probably the one time I am going to be able to tackle this, so I don't want to be sat here this time next year saying why didn't I do it?"Mrs Walker said their two dogs, Clover and Wilson, would be taking it easy while they were away"We're taking our time, the weather has been really good and we have done about seven miles so far," she said.
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