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The warming climate is forcing marathons to consider changes to keep runners cool

The warming climate is forcing marathons to consider changes to keep runners cool

Summary

Marathon organizers are changing race schedules and rules to deal with rising temperatures caused by climate change. These changes aim to keep runners safer and cooler during long-distance races.

Key Facts

  • Runners struggle to cool down during marathons when temperatures go above 60°F (15.5°C).
  • Climate change is causing higher temperatures, making some marathons dangerous to run in warm weather.
  • The Twin Cities Marathon will move its date in 2027 from early to later October to avoid heat.
  • The Sioux Falls Marathon moved from August to September after canceling its 2024 race due to heat.
  • Several marathons like the Air Force, Little Rock, and Long Beach races have shifted start times earlier to cooler hours.
  • The 2025 Los Angeles Marathon offered runners an option to finish early at 18 miles to avoid heat risks.
  • Only a small number of runners took the early finish option in Los Angeles, and few required hospital treatment.
  • Organizers are adapting race plans to protect runners as warmer weather becomes more common.
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