Aging Racefully: Running marathons in your 60s and beyond Legendary marathon runner Kathrine Switzer and participants in this year's New York City Marathon share the benefits of running in your golden years. ABC News' Alison Kosik reports.
Aging Racefully: Running marathons in your 60s and beyond Legendary marathon runner Kathrine Switzer and participants in this year's New York City Marathon share the benefits of running in your golden years. ABC News' Alison Kosik reports.
