Eight year olds Harry Parsons and Hadleigh Alexander-Smith, who are classmates at Shears Green junior school in Northfleet, walked more than nine miles to help cancer sufferer Stacey Mowle.
Both Harry and Hadleigh went to the infants school with Stacey, also eight, before her illness forced her to leave.
Stacey, who lives in Trafalgar Road, Gravesend, suffers from relapsed neuroblastoma and her family need to raise £500,000 for specialist treatment in the US.
It was Harry’s idea to do the sponsored walk from Gravesend to Dartford and knowing Hadleigh – who lives in Springhead Park, Northfleet – already had two walks for Stacey under her belt, he invited his chum to join him.
Harry’s mum, Teresa Carlow, 48, accompanied them. She said: “There wasn’t a whinge between them. Somebody asked me afterwards whether the kids were tired or me.
“They were still bouncing at the end and wanted to look around Dartford market but I just wanted a beer!”
The trio set off from Harry’s home he shares with his mum in Trosley Avenue, Gravesend, and walked to his dad’s home in Highfield Road, Dartford. There were pit-stops along the route, including much-needed refuelling at the Hot Rod Diner in Northfleet and McDonald’s in Greenhithe, and they crossed the finishing line in three and a half hours.
Once all the money is collected, Harry and Hadleigh hope to have raised more than £400 for Stacey.
“Harry just said to me he wanted to do something for charity and I suggested raising money for Stacey,” said Ms Carlow.
“He just wants Stacey to get better and to come back to school.”
Harry and Hadleigh’s walk was part of a week of fundraising activities which amassed around £3,000 for the appeal.
Other Just4Stace events included a bowling day at AMF Bowling, Gravesend, a pampering evening at the Manor Hotel in Singlewell and an online auction.
To add to Harry and Hadleigh’s total, go to www.justgiving.com/HarryJParsons.
Don't miss out, subscribe today. Keep up to date with our newsletters.
A guide for your future. For year 11 students in Kent and Medway. Click here for the e-edition.
Education, Training & Childcare is a special supplement published by KM Media Group four times a year. Click here for latest e-edition.
Get the latest food and drink news, recipes from some of the nation's top chefs plus updates from Kent's vineyards and breweries.
Search in your local area to find your perfect partner in Kent, with FreshStart Dating! PLUS, register for free!.
Find out what's going on in the garden, with Kent expert Lucy Hewett's weekly update.
Buy pictures that you've seen in a KM newspaper, or send in a picture and we will place it on our photo sales website so that you can purchase a super, unique gift.