Rising temperatures are forcing marathon organizers across the United States to reconsider race dates and schedules as extreme heat creates greater risks for runners.
According to the report, the Twin Cities Marathon in Minneapolis-St. Paul will move its race from the first Sunday of October to later in the month beginning in 2027, ending a tradition that has lasted more than four decades.
The report said a Climate Central analysis of 221 marathons found that warming conditions are making races increasingly challenging.
In Los Angeles, organizers recently allowed runners to stop after 18 miles and still receive a finisher's medal after unusually warm conditions raised concerns about overheating.
The changing conditions could affect sporting events beyond marathon running. Experts said organisers of competitions ranging from tennis tournaments to college football may increasingly need to adjust event dates, start times and safety measures as climate change produces hotter and more unpredictable weather.
Related Tweet:
The warming climate is forcing marathons to consider changes to keep runners cool https://t.co/q61LQWsKo0
— O.C. Register (@ocregister) August 13, 2026
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