At the 2026 London Marathon, Sabastian Sawe became the first man to run an official marathon in less than two hours. It is one of the most outrageous feats of athleticism I’ve ever seen. The Kenyan-born runner’s relentless training, superior fitness and iron mindset can be credited with 99.9-plus per cent of his incredible performance. But in the world of elite sport where every millisecond counts, attention has understandably turned to what he had on his feet: the Adidas adizero adios pro evo 3 (£450, Adidas.co.uk ). This is the first sub-100g super shoe, coming in at 97g in a UK size 8.5. It was also worn by Tigst Assefa, who smashed her own women’s-only marathon world record on Sunday, and second-placed men’s finisher Yomif Kejelcha, who also broke the elusive two-hour barrier on his competitive marathon debut. Clearly, there is something special about this shoe. So, on the eve of this year’s London Marathon, I headed to a mysterious warehouse near Marylebone for a sneak preview.…