For the first time in an official competition, a man has run 42,195 metres in under two hours. The Kenyan Sabastian Sawe crossed the finish line on The Mall in one hour, 59 minutes and 30 seconds at the London Marathon on Sunday, erasing by a full 65 seconds the world record set by his late compatriot Kelvin Kiptum in Chicago two and a half years ago. That he was not alone in breaching the old mark only deepened the sense of a paradigm shift: the Ethiopian debutant Yomif Kejelcha followed him home in 1:59:41, while Uganda’s Jacob Kiplimo, in third, also dipped under Kiptum’s time. Forty-eight hours after the race, the athletics world is still struggling to absorb what it witnessed — a barrier long considered absurdly distant collapsing not gradually, but all at once.

Viewed from Nairobi, the achievement has been received as a thunderclap of national pride, though it arrives freighted with the awkward baggage Kenyan distance running has accumulated in recent years. Since 2017, no fewer than 145 Kenyan athletes have been sanctioned for doping violations, and the shadow deepened last October when the women’s world record-holder Ruth Chepng’etich received a three-year ban. Sawe, keenly aware of this context, volunteered a regime of extraordinary transparency: he submitted to 25 blood and urine tests in the weeks before the Berlin Marathon last year, and requested similarly intensive screening ahead of London. “I wanted to prove to the world that I am clean,” he said afterwards, a statement that analysts in European capitals read as much as a plea for the credibility of his discipline as a personal vindication.

From London to Leipzig, however, the conversation has pivoted almost as swiftly to the equipment on Sawe’s feet. The Adidas Adizero Adios Pro Evo 3, a shoe weighing 97 grams and retailing at five hundred dollars, carried all three of the men’s record-breakers as well as the Ethiopian Tigst Assefa, who bettered her own women’s world record in the same race. Sports scientists interviewed in the German press describe the carbon-plated, ultra-compressed foam sole as operating “like a trampoline,” returning energy on each footstrike and fundamentally altering running biomechanics over the closing kilometres. The model sold out within hours of its American pre-release and appeared on resale platforms at four thousand dollars by Monday afternoon, prompting wry observations in Swiss and French editorials that the marathon’s new frontier is being defined as much in corporate laboratories as on East African dirt roads. The Frankfurter Allgemeine struck a cautionary note, reminding readers that the shoe alone is never the whole story — Sawe logs up to 240 kilometres a week under the Italian coach Claudio Berardelli and reportedly fuelled his record on little more than bread with honey and precisely timed energy gels.

Yet the implications are already rippling outward. Sydney Marathon organisers, hunting a World Marathon Majors slot, have signalled their intention to lure Sawe and Kejelcha to Australian shores in August, though they concede the asking price has risen sharply since Sunday. Viewed from North American newsrooms, the episode marks a decisive shift in the commercial balance between Adidas and Nike, whose own supershoe revolution kicked off in 2017 but which now finds itself overtaken in the battle to outfit record-breaking feet. For the broader public, the spectacle of three East Africans dismantling a mark that physiologists once predicted might stand until 2075 has reignited an old argument about whether technology is enhancing human achievement or cheapening it. Sawe himself insists the truth lies in the synthesis: “It reflects the hard work behind the scenes, the innovation and a clear mind.” The marathon has entered a new era. The two-hour barrier, having fallen, will almost certainly fall again — perhaps as soon as Berlin in the autumn, where a flatter course and cooler temperatures could, several European analysts note, shave another thirty seconds from the clock. The question now is not whether the record will be broken, but by how much, how often, and at what cost to the sport’s already fragile relationship with believability.