They may just be starting out in life, but they still know the importance of helping a friend in need.

North Norfolk News: Noah is pictured his best friend Izzy, Harry Deeba's sister. Noah, six, his sister Ellie, two, children of Rebecca and Adrian Harris, of Cringleford, are planning to walk 5kms with their parents along the north Norfolk coast to raise money for Harry Deeba. Picture: SUPPLIED BY THE FAMILYNoah is pictured his best friend Izzy, Harry Deeba's sister. Noah, six, his sister Ellie, two, children of Rebecca and Adrian Harris, of Cringleford, are planning to walk 5kms with their parents along the north Norfolk coast to raise money for Harry Deeba. Picture: SUPPLIED BY THE FAMILY (Image: Archant)

And that's why six-year-old Noah Harris and his sister Ellie, two, have decided to brave a 4.5mi walk along the north Norfolk coast from Cromer to Sheringham for charity.

Noah is best friends with five-year-old Izzy Deeba, sister of Harry Deeba, two, who has stage four neuroblastoma.

Noah and Ellie's parents Rebecca and Adrian Harris, from Cringleford, will be joining them on the walk, which aims to raise as much money as possible so Harry can fly to the US for potentially lifesaving treatment.

Mrs Harris said the families had a strong connection and they wanted to do everything they could to help little Harry.

North Norfolk News: Noah, six, and Ellie, two, on the left, and Izzy with her brother Harry Deeba on the right, enoy a day out.. Noah and Ellie, along with their parents, Rebecca and Adrian Harris, are doing a north Norfolk coastal walk to raise money for little Harry. Picture: SUPPLIED BY THE FAMILYNoah, six, and Ellie, two, on the left, and Izzy with her brother Harry Deeba on the right, enoy a day out.. Noah and Ellie, along with their parents, Rebecca and Adrian Harris, are doing a north Norfolk coastal walk to raise money for little Harry. Picture: SUPPLIED BY THE FAMILY (Image: Archant)

She said: 'I went to school with Carly and her partner Ali - Harry's parents - and we were all good friends.

'Since having children we've become very close friends often having days out together, until poor Harry got poorly last January.

'Noah is four months older than Harry's big sister Isobel and Ellie is 10 days older than Harry. They've all grown up together.'

'Adrian, who will also be doing the walk as well, is fighting his own cancer battle, he had his voice box out earlier this year and is currently in week two of his radiotherapy treatment.'

North Norfolk News: Noah Harris, six, with his friend Izzy, Harry Deeba's sister. Noah and his family are doing a north Norfolk coatal walk to raise money for little Harry. Picture: SUPPLIED BY THE FAMILYNoah Harris, six, with his friend Izzy, Harry Deeba's sister. Noah and his family are doing a north Norfolk coatal walk to raise money for little Harry. Picture: SUPPLIED BY THE FAMILY (Image: Archant)

Other fundraising events taking place for Harry include a superhero walk through Norwich city centre, football match between police and firemen and a sky dive in Beccles.

The youngster was diagnosed with a high-risk neuroblastma - a particularly aggressive childhood cancer - at Addenbrooke's Hospital in Cambridge in January last year. Almost 50pc of children diagnosed relapse at some point, and when that happens, fewer than one in 10 survive.

Harry's family are hoping to raise £239,000 to travel to New York for treatment that could stop the cancer returning.

The Harris's have so far raised more than £150 towards their £250 target, and Mrs Harris is also planning to do a fundraising run for the cause.

To donate to Noah and Ellie's fundraising walk, which will take place on Saturday, April 20, visit www.justgiving.com/fundraising/rebecca-howes3.