The Yorkshire Yaks fundraising team will take on the the Yorkshire Three peaks challenge next weekend.
Dozens of supporters will attempt to complete the three hills – Pen-y-ghent, Ingleborough and Whernside – in under 12 hours.
The group will raise money for Macmillan Cancer Support, which is currently helping to fund a new multi-million pound cancer centre at the Friarage Hospital in Northallerton, and the Oxford Transplant Foundation.
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Macmillan and the Oxford Transplant Foundation both played a fundamental part in saving Wensleydale man Adam Alderson’s life when he was dying of a rare form of cancer, pseudomyxoma peritonei, in 2015.
Adam and wife Laura launched the Yorkshire Yaks as a way of helping the organisations which saved him.
The walk will take place next Saturday, April 21 and there is still time to get involved with everyone of all ages and abilities welcome.
Adam said: “We will all set off together from Horton in Ribblesdale at 6am and after that we encourage everyone to go at their own pace, independently.
“You can do as many peaks as you want to, there are no rules.
“You can do one, two or three peaks. A lot of people are planning to do two and then head to the pub. We will all try and meet up at the end for a few well-deserved beers!”
Participants are asked for a donation of £25 per person which will all going straight to the charities.
In exchange you’ll get a t-shirt, bottled water and a goody bag.
Anyone wanting to get additional sponsorship is welcome to do so.
After chemotherapy and surgery failed, Adam ultimately underwent a multi organ transplant, complete with radical tumour de-bulking.
The surgery took 30 staff 17 hours, but it was a success.
The process consisted of the removal of a 10kg tumour along with his stomach, large bowel, small bowel, gallbladder, pancreas, appendix, spleen, abdominal wall, and a large proportion of his liver. He was then transplanted with multiple abdominal organs.
The Yaks have already done a number of charity challenges including the Mongol Rally which saw them drive from Leyburn to Mongolia in two old Suzuki Jimneys.
You can donate to the walkers by clicking here.
To find out more about taking part visit the Yorkshire Yaks Facebook page here.