Harry Burns from Bushbury in Wolverhampton will take on a 15-mile bike ride from Wolverhampton to Birmingham to help raise funds for Water for South Sudan.
The 11-year-old decided to take on the challenge, which will follow the canal paths, after learning about the water crisis in the African country in a lesson at Brewood Middle School.
His mother Danielle said he had come home from school and said he wanted to do something to help.
She said: "He came home from school talking about the lesson and said he wanted to donate some money which, originally, was going to be him doing the dishwasher for the week and donating his pocket money.
"However, he said he wanted to raise more money, so I have him the idea of doing a fundraiser and it's just gone from there."
Mrs Burns said Harry came up with the idea of riding to Birmingham as he was a keen cyclist and loved going out on rides with his dad Jamie.
She also said that when the ride eventually takes place, it will be the first time Harry has done a charity challenge after years of supporting charities.
She said: "We don't know yet when they can go riding because of lockdown and we're just waiting for news about any dropping of restrictions.
"Every time he has seen a charity on the TV, he's asked if we can donate to them and I've told him that we can't donate to everyone, but it shows how he always wants to help the less fortunate.
"I'm really proud of him for doing this and I love the fact that whenever he checks the fundraising page, he'll come and tell me another person's donated, which makes him happy."
To find out more about Harry's challenge and to make a donation, go to classy.org/fundraiser/3123539