Racing Against the Thermometer: How Climate Change is Rewriting the Marathon Rulebook
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November 8, 2026
DES MOINES, Iowa — For Paul Grinvalds, the marathon is more than a race; it is a pursuit of discipline that has taken him across all 50 states to complete 114 marathons. Yet, at 68 years old, Grinvalds has learned that his most formidable opponent isn’t…
