This cute footage shows a little boy high-fiving London Marathon runners.
Jonah Azevedo-Casella, four, watched Sunday's event with his mum Michela Casella, 39.
She says he spent an impressive half an hour holding out his hand for participants.
Michela, who filmed the wholesome moment, said: "We live on a road in Charlton where the London Marathon passes every year, and as always, we go out in front of the house to cheer on the runners.
"My sons love watching the runners and spotting all the funny costumes.
"And they love giving high-fives as a way to cheer and encourage them."
