Kenyan marathon runner Hyvon Ngetich led the women's field in Austin, Texas, for 23 miles, but her body broke down in the final stretch
Kenyan marathon runner Hyvon Ngetich led the women's field in Austin, Texas, for 23 miles, but her body broke down in the final stretch. When volunteers offered her a wheelchair, she refused and crawled across the finish line. Norah O'Donnell reports.
