A 58-year-old runner collapsed and died at Walt Disney World's Wine and Dine 5K race.
The Orlando Sentinel reports Mark Lockridge collapsed while running in Epcot during the 3.1-mile race on Friday.
Reedy Creek Fire Department spokeswoman Eryka Washington told the newspaper that paramedics were riding bicycles along the course, so they were able to respond quickly.
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The man was taken to a hospital in nearby Celebration but was pronounced dead. A medical examiner's report said Lockridge died of natural causes.
Disney officials said in a statement that they are "deeply saddened by this heartbreaking loss."