Never mind Mo Farrah - here's Henry Edwards, the little lad who has just completed up his first marathon just aged five.
Henry completed his epic challenge on Sunday - which was supposed to be the date for this year's London Marathon - as the whole street cheered him on as he crossed the finishing line.
He ran an impressive 2.6 miles every day for 10 days in memory of his three-year-old cousin who died suddenly.
Henry's mother, Katey Edwards, explained the challenge was set up to help raise some funds for the charities who would otherwise miss out as a result of the marathon being cancelled.
However, when they first came up with the fundraising idea the plan was to walk it and maybe try and run parts. But little Henry had other ideas.
"On the first one he just ran and ran and ran," added Katey, 39.
"I hadn't ran in three years - I didn't even have running trainers.
"On the first one he ran 3.2 miles because I couldn't judge the distance, and since he has ran 10 times."
Katey, from Miskin, Pontyclun said they chose the charity 2 Wish Upon A Star - a charity that supports bereaved families.
"2 Wish Upon a Star have given us, as a family, so much.
"As much as it's been fun and tiring we have had so much support - that's the really overwhelming part."
"They are still going but are not receiving a lot of funds.
"We decided we would do the 2.6 challenge every day for 10 days so we would have walked 26 miles."
An initial target of £100 was set up. However, once word of Henry's steely determination got around, the total on their JustGiving page kept going up and up.
Katey added: "The people, and community, in Miskin has played a huge role. They have been out on their doorsteps cheering and clapping, at a safe distance, for Henry to give him that extra push.
"We thought if we could raise £100 it would be amazing.
"Now we have raised £11,000 and it's going up by the minute.
"It's been unbelievable."
