Dos Santos sets new 400m hurdles world record in Zurich — image accompanying Athletics Weekly's report. Image accompanying Athletics Weekly’s report; reduced and presented for news commentary with the attributed report. View the complete source report.
Alison dos Santos broke Karsten Warholm's 400m hurdles world record at the Weltklasse Zürich, clocking 45.80. The Brazilian's time also set a Diamond League and meeting record.
Dos Santos, 26, dominated the season, beating Warholm multiple times. Warholm, 30, finished second with a season's best of 46.69. Both athletes qualified for the Diamond League Final. Read more racing coverage.
Dos Santos' victory marks a significant moment, as Warholm had previously held the record since the Tokyo 2021 Olympics. The race highlighted the intense competition between the two. Related: Weltklasse Zürich: Final Regular-Season Diamond League Meet.
This original Runner World brief is based on reporting from Athletics Weekly. Visit the source for its complete reporting, context and any later corrections.
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What should runners know about Dos Santos sets new 400m hurdles world record in Zurich?
Alison dos Santos beats Karsten Warholm's record at Weltklasse Zürich. Alison dos Santos broke Karsten Warholm's 400m hurdles world record at the Weltklasse Zürich, clocking 45.80. The Brazilian's time also set a Diamond League and meeting record.
When did Runner World publish this racing brief?
Runner World published this brief on August 27, 2026. The underlying Athletics Weekly report was dated August 27, 2026.
Where can readers find the complete original report?
This summary is based on reporting from Athletics Weekly. The attributed source link in the article leads to the publisher’s complete report.
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