Even if you’re not a running fan, chances are you heard that former Dartmouth College standout Glenn Randall led the opening 10 k of the Boston Marathon last Monday. Actually, ‘led’ doesn’t quite describe it — he gapped the elite men’s field, frenzy. To those who had never heard of Randall, it looked as though he was trying to grab a few minutes of fame with an opening pace he couldn’t hold. But as he...