The challenge is immense but Isle of Wight firefighter living with a brain tumour is determined to finish his third London Marathon.

Next weekend, Mark Grimes will once again be taking on the epic marathon in aid of the Wight Brainy Bunch, set up by Mark and his wife Kathryn following his life changing diagnosis in 2015, and The Brain Tumour Charity.

Back in 2016, Mark had to dramatically pull out of the race at mile 23, but went on to finish his second attempt in 2017.

With the third race now beckoning, Mark said:

“With all the charity work my wife Kathryn and I have been doing this year, I found training really difficult.

“Due to time and work constraints at the Ryde fire station, I went a bought a treadmill after Christmas, much to Kathryn’s disgust, as it has taken over the dining room!

“20 miles on a treadmill on a Sunday morning is the not the most fun I’ve ever had, put it that way.”

Following his diagnosis four years ago, Mark underwent brain surgery while conscious to allow surgeons to remove 95 percent of it.

Ever since, he has used running to rehabilitate and get his life back on track and he’s now back at work as a firefighter.

Mark told Isle of Wight Radio:

“Running’s always been my thing – my sport – I’m not very good at other sports like rugby and football and thing. Having brain surgery, and the possible side effects and risks of that – you could be physically debilitated and not able to do the things you used to be able to do, so being able to run after having surgery is a big thing for me.”

You can donate here.