Two world records set at Zurich Diamond League — image accompanying Canadian Running's report. Image accompanying Canadian Running’s report; reduced and presented for news commentary with the attributed report. View the complete source report.
Alison dos Santos of Brazil set a new world record in the men's 400m hurdles, clocking 45.80 seconds. This surpasses Karsten Warholm's previous record of 45.94 seconds.
Masai Russell of the U.S. claimed the women's 100m hurdles record with a time of 12.09 seconds, beating Tobi Amusan's prior mark of 12.12 seconds. Read more racing coverage.
Both athletes dominated their respective seasons, with Dos Santos unbeaten and Russell consistently under 12.20 seconds. Their records add to the 29 set at Letzigrund Stadium. Related: Zurich Diamond League Sets New Records in Thrilling Meet.
This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.
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What should runners know about Two world records set at Zurich Diamond League?
Alison dos Santos and Masai Russell break records in hurdles events Alison dos Santos of Brazil set a new world record in the men's 400m hurdles, clocking 45.80 seconds. This surpasses Karsten Warholm's previous record of 45.94 seconds.
When did Runner World publish this racing brief?
Runner World published this brief on August 30, 2026. The underlying Canadian Running report was dated August 27, 2026.
Where can readers find the complete original report?
This summary is based on reporting from Canadian Running. The attributed source link in the article leads to the publisher’s complete report.
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