A 31-year-old man collapsed Sunday near the finish line of the New York City triathlon, in which thousands of racers defied the sweltering heat to swim, bike and run.

Race director Bill Burke said the London man was hospitalized in critical condition.

Eleven other people also were hospitalized, but didn't appear to have serious injuries.

More than 3,000 people participated in the race as the heat spiked into the 90s near Central Park. Participants travel a more than 50-kilometer course.

Burke said hospital officials are trying to determine whether the London man suffered from a heat-related illness.

He was not identified by name.

There has only been one death in the race's 10-year history.

In 2008, a 32-year-old man from Argentina died during the Hudson River swim.

- AP

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