NHPR's In-House Marathoner Weighs In On Olympic Track and Field

Millions of Americans have been following the Olympics in London, and NHPR staffers are no exception. But one of our colleagues is watching with a more seasoned eye – Keith Shields is executive producer of The Exchange, but he’s also a 27-time marathoner who's currently training for an Iron Man triathlon in Quebec.

He tells All Things Considered host Brady Carlson about the races he's been following, London's history in shaping the modern marathon, and whether athletes watch Olympic competition any differently than the rest of us.