Police are investigating after dozens of runners required medical treatment during and after the Santa Barbara Half Marathon and 5K in California on Sunday, 8 November.
All runners who were admitted to hospital have since been discharged, according to local broadcaster KEYT. County health officials have pointed to heat and race exertion as the likely explanation, while the police investigation into the circumstances remains open.
The incident attracted widespread attention after reports of runners collapsing or becoming unwell near the closing stages of the race, followed by speculation online about the water supplied on the course. No official finding has established that drinks were contaminated.
Thirty Runners Needed Treatment
Santa Barbara County health officials said 30 participants received medical treatment. Of those, 26 were transported to local emergency departments by ambulance or private vehicle, while four were treated and released at the scene.
The first request for medical assistance came at approximately 8.41am, when a runner experienced lightheadedness and felt faint. Further calls followed as other participants along the route needed help.
Cottage Health separately reported treating 27 runners at its emergency departments in Santa Barbara and Goleta. That hospital figure differs slightly from the county’s transport total.
Three patients remained in hospital on Monday, but KEYT reported on Tuesday, 10 November, that all hospitalised runners had been discharged.
Reports Of Unusual Symptoms
Santa Barbara Police began investigating after receiving reports of participants seeking treatment for what the department described as “unusual symptoms”.
In subsequent reporting, KEYT described accounts of runners struggling to recall parts of the race and needing help to walk. The broadcaster also reported that blood samples had been collected from some patients, but no positive test results had been confirmed by the agencies involved.
Those accounts have fuelled questions about what happened. They have not, however, established a cause for the illnesses.
Health Officials Point To Heat
The county health department said the incident appeared connected to race participation and the heat, with no indication of a wider public health concern or continuing risk to the community.
Race director David Monico said medical teams had treated runners for dehydration and overheating, both on the course and at the finish. Organisers said they had no information suggesting a cause beyond the effects of endurance event exertion.
The event took place in unusually warm conditions for November. Associated Press reported that temperatures had reached approximately 27°C by 10am, three hours after the race began.
Water Rumours Remain Unconfirmed
Claims about interference with drinks circulated on social media, but have not been substantiated by investigators.
County Environmental Health Services inspected the electrolyte drink preparation location on the Friday afternoon and Saturday morning before the event. Inspectors reported no violations or concerns, with the supplies examined properly packaged and stored in sanitary conditions.
Those inspections relate to preparations before the race. They do not amount to a final finding on the cause of Sunday’s incident.
For now, all hospitalised runners have been discharged, health officials consider heat the likely explanation, and police have yet to announce a final conclusion.
