The Boston Herald tells how McGillivray has coped since early October.

Dave McGillivray is perhaps best known as the race director of the Boston Marathon, a post he has held in one form or another since 1988. Each year, Dave runs the marathon . . . and then runs the marathon. Having spent most of the day attending to every last detail, he heads back out to Hopkinton and runs the 26.2 miles to Copley Square.

But McGillivray is human, just like the rest of us.

It was just a few months ago that McGillivray, who was finding himself short of breath at the beginning of his runs, decided to undergo an extensive array of tests. He had been tested before, but, as he put it, “None of those tests indicated I was in trouble.”

This time he underwent the big-boy tests, including a CT scan and an angiogram.

This time he found out he was in trouble.

What McGillivray learned was that he had “multiple blockages and narrowing in a number of my arteries,” he said. “One was 70 percent, and the others were in the 40-50 range."