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Article Summaries:

  • A new study published in Scientific Reports shows that heat‑stress events along the Tour de France route have risen in both severity and frequency over the past five decades. Using 50 years of climate data and wet‑bulb globe temperature (WBGT) calculations for six key French cities, researchers found that the heat‑stress threshold set by the international cycling federation in 2024 has rarely been breached on race days. However, the authors warn that continued warming will make such breaches “only a question of time,” suggesting that future editions of the race may face increasingly dangerous temperatures.
  • Dangerous heat for Tour de France riders only a ‘question of time’ Giuliana Viglione 02.24.26Giuliana Viglione 24.02.2026 | 10:00amRising temperatures across France since the mid-1970s are putting Tour de France competitors at “high risk”, according to new research. The study, published in Scientific Reports, uses 50 years of climate data to calculate the potential heat stress that athletes have been exposed to across a dozen different locations during the world-famous cycling race. The researchers find that both the severity and frequency of high-heat-stress events have increased across Franc

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