Several sporting events in the Netherlands have been cancelled or modified due to an anticipated heatwave. Organizers are prioritizing participant safety as temperatures are expected to soar in the coming days. Hardloopwedstrijden (running races), including the Wiezoloop and Vuurtorenloop, have been called off following negative safety advisories from health authorities, citing concerns about heat, humidity, and potential thunderstorms. The Climate Classic cycling event will shorten routes. These cancellations follow recent incidents where participants became ill during races, and tragically, two deaths occurred during marathons in Utrecht and Leiden, though the role of heat in those cases remains unclear. The national heat plan is now in effect, urging extra caution for vulnerable populations like the elderly and those with chronic illnesses.