Brazilian Runner Breaks Women's Treadmill World Record — image accompanying Marathon Handbook's report. Image accompanying Marathon Handbook’s report; reduced and presented for news commentary with the attributed report. View the complete source report.
Débora Simas, a 55-year-old Brazilian ultramarathoner, set a new women's treadmill world record. She ran 866.21 km in Florianópolis, surpassing Emma Timmis's previous record of 846.16 km.
Simas averaged 18:44 per mile, including sleep. Her daily totals varied, with the fifth day being her worst at 102.32 km. She faced challenges, including severe cramping on the fifth day. Read more racing coverage.
This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.
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What should runners know about Brazilian Runner Breaks Women's Treadmill World Record?
Débora Simas ran 866.21 km in seven days, surpassing the previous record by 20.05 km. Débora Simas, a 55-year-old Brazilian ultramarathoner, set a new women's treadmill world record. She ran 866.21 km in Florianópolis, surpassing Emma Timmis's previous record of 846.16 km.
When did Runner World publish this racing brief?
Runner World published this brief on August 16, 2026. The underlying Marathon Handbook report was dated August 16, 2026.
Where can readers find the complete original report?
This summary is based on reporting from Marathon Handbook. The attributed source link in the article leads to the publisher’s complete report.
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