Santa Barbara Police Investigate After 27 Half-Marathon Runners Fall Ill

What changed

Santa Barbara police opened an investigation after 27 people who ran Sunday’s half-marathon received emergency treatment for unusual symptoms. Twenty-four were discharged, while three remained in stable condition; the race took place as temperatures reached 86F (27C), well above the area’s typical early-November low 70s.

Why it matters

The immediate question is whether the heat and dehydration explain the cluster, or whether something else affected participants. Police have confirmed no cause and recommended no specific public action, while the event director said 15 people were taken from the medical tent to hospitals for dehydration and overheating.

One runner told local television they lost consciousness, could not remember parts of the race and heard reports of hallucinations. That account may not represent the wider group, but it explains why a routine medical response has become a police investigation. Participants who feel unwell have been advised to seek medical care and follow doctors’ guidance.