The warm weather poses significant risks to runners, including heat stroke, dehydration, and cardiac stress. Symptoms of heat stroke, such as headache, nausea, and dizziness, can be difficult to distinguish from the physical strain of running. Younger runners may be more responsive to advanced medical interventions like ECMO, which will be available for the first time at the event. Organizers are taking these precautions seriously to prevent further incidents, as the heat can exacerbate underlying health conditions and lead to life-threatening situations.