Roman Mica

A 23-year-old man from Boston collapsed at the 25th-mile marker of the Baltimore Marathon.

The man was taken to the hospital with a a core body temperature of 107 or 108 degrees and was pronounced dead a few hours later.

The local medical examiner is scheduled to perform the autopsy today to try to determine the cause of death.

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This is the second time a runner has died in the race’s nine-year history. A brain aneurysm apparently claimed the life of a participant in the first year of the race, Corrigan said.

It is very uncommon for runners to die during a marathon—some studies have suggested a rate 1 death per 50,000 runners.