"Catherine Debrunner's Chicago Marathon World Record: Wheelchair Racing's New 1:33:16 Mark"

Catherine Debrunner did not expect to break a world record in Chicago. She said so herself, right after doing it. The course is technical, full of turns that punish wheelchair racers, and she had already owned the record for three years. On Sunday, October 11, she took a full minute off it anyway, finishing the women's wheelchair race at the Chicago Marathon in 1:33:16 and beating her own mark of 1:34:16, set in Berlin in 2023.

The way she did it was almost rude in its efficiency. She was 48 seconds clear by the 5km mark and never looked back. By the finish, local favourite Tatyana McFadden, a nine-time Chicago champion, was second, and two-time champion Manuela Schär third. The defending champion, Susannah Scaroni, had skipped the race to welcome her first child. Debrunner's win was her third in Chicago, her fourth Abbott World Marathon Majors victory of the season after Tokyo, London and Berlin, and it confirmed her as the season's Elite Series champion.

Her compatriot Marcel Hug won the men's wheelchair race for the seventh time, adding another title to a career that already includes the world record. Between them, the two Swiss racers turned Chicago into a demonstration of what the sport's top end now looks like: not a sideshow to the foot races, but a discipline with its own stars, its own tactics, and its own rapidly moving frontier.

That frontier is what interests me. A marathon world record falling by a full minute is not a small adjustment. It is the kind of jump that happens when several things improve at once: training, chair technology, racing strategy, and the depth of the field pushing the leader from behind. Debrunner is 31, in the middle of a Paralympic champion's prime, and she is racing against fields that get faster every year. The record she set in Berlin stood for three years; the one she set in Chicago may not last nearly that long.

There is also something quietly radical about where this record fell. Chicago is not the course you pick for a record attempt. Berlin is flat and famously fast; Chicago twists. Debrunner broke the record on a course that was supposed to hold her back, on a day when the weather and the crowd happened to be right. That tells me the improvement is real, not a product of one perfect course. When an athlete beats their best on the wrong course, the next attempt on the right one becomes the interesting question.

So here is my prediction: before the end of 2027, Debrunner will break this record again, going under 1:33:16. Berlin, where she set the previous record, is the obvious stage, and she will have at least two more Marathon Majors seasons to try. Records at this level do not fall every year, and a minute is a large margin to find again. But she just found a minute on a technical course she did not expect to be fast. I would not bet against her finding seconds on a fast one.