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A Chicago man ran the Boston Marathon with a cow heart valve 11 weeks after open-heart surgery. 13 years later, he’s running for another milestone.

A Chicago man ran the Boston Marathon with a cow heart valve 11 weeks after open-heart surgery. 13 years later, he’s running for another milestone.

Mark Buciak trains for his 40th straight Boston Marathon with his dog, Fenway, at Oz Park in Chicago. (Antonio Perez / Chicago Tribune) Mark Buciak was given two alternatives to fix his leaky heart: A cow valve. Or a mechanical device. The long-distance runner from Chicago, who will attempt to become the first Illinois competitor to finish 40 straight Boston Marathons on Monday, had a question about a third option. “Do you have any cheetah valves?’’ Buciak asked Patrick McCarthy, Northwestern Memorial Hospital’s chief of cardiac surgery. “Because I’d really like to come out of this running faster.’’ Buciak […]

Purely Boston

The author Purely Boston