Eilish McColgan has revealed that she ran the second half of the London Marathon with a blister so severe she described the sensation as her foot "exploding", a bloodied insole posted to her social media confirming the price she paid to finish seventh in 2:24:51 on Sunday. The Dundonian still came home as the fastest British woman in the field — 26 seconds outside the Scottish women's-only record she set on the same course last year — and one of only four British women to finish inside 2:25 across the entire elite race.

McColgan said the issue surfaced just past halfway in the Docklands, where the new women's-only field had been running comfortably under personal-best pace behind eventual world-record-breaker Tigst Assefa. By 30 kilometres the British number one was visibly limping through every left turn, working to keep her left foot off the camber wherever the road allowed. "I genuinely thought it had burst open," she told Athletics Weekly after the race. "It was like running with a knife under my arch for fifteen kilometres."

The decision to keep going, rather than step off, was a calculated one. McColgan still needed a Commonwealth Games qualifying performance for Glasgow this July, where she will represent Scotland in front of a home crowd at the rebuilt Hampden Park track and the city's marathon course, and Sunday's run secures that nomination outright. Scottish Athletics confirmed within hours that her time clears the federation's standard for both the marathon and the 10,000m on the track, leaving her free to choose her programme through May.

The injury picture beyond Glasgow is more delicate. McColgan said she will take ten days completely off running before reassessing the foot with the British Athletics medical team, with the Diamond League opener in Shanghai on 16 May ruled out and the Stockholm 5,000m on 7 June now her likely return point. The longer-term plan remains the LA28 Olympic marathon, with her coach Liz McColgan-Nuttall — who set the very record her daughter has just rewritten — telling reporters that the marathon is "where Eilish belongs now, but track speed is the foundation we still need to protect."

For British distance running, Sunday's race was a watershed regardless. Charles Hicks ran 2:07:42 and Mahamed Mahamed climbed to second on the UK all-time list with 2:06:14, and on the women's side McColgan, Calli Hauger-Thackery, Rose Harvey and Phily Bowden all dipped inside 2:27 — the deepest British women's marathon field of the modern era. McColgan's bloodied finish became the image of the day on UK social feeds, but the substance underneath it is a generation of British marathoners who, for the first time since Paula Radcliffe and Mara Yamauchi, look like a championship team.