James Langridge from Newick will be attempting to travel down the 12,388 feet high mountain in just two hours next year.
After completing the London Marathon this year, where he raised £1,500 for the Foundation for the Study of Infant Deaths (FSID) James wanted to take on a new challenge for the charity.
He said: "It has been my dream to conquer Mount Fuji for a while now after reading an article about it and I thought I would do it for charity.
"My brother, who was born a year before me, died of cot death in 1980. This year I ran in the 27th London Marathon, the same day that my brother would have been 27."
You can sponsor James at his
Just Giving pageYou can also support him by joining his
facebook group For more on this story see this week's Mid Sussex Times.