Today in the British Milers' Club Sportcity Grand Prix in Manchester, UK, just 8 days before turning 16, Max ran 1:47.50 for an age 15 World Record in the 800m.
Here's a timeline of his progression from age 12 until now. Thanks to Peter Thompson.
Max alsoruns cross country in the England Athletics Park Runs - here are his progression at 5Km Park Runs and Cross Country Championships.
Here are some links to past articles about Max.