Detailed text transcripts for TV channel - CNN - 20210524:20:53:00
Hiking up waterfalls and when something happens to one of us it kind of happens to all of us. >> reporter: on top of the frequently brutal terrain ultra races are often much longer than marathons. 50, 100, 200 miles and more. camille heron, another top world ring, knows all about the dangers. >> and part of, you know, being an ultra return, you know, is using your head, being able to troubleshoot and work through problems to keep going. >> reporter: still, ultra marathons are growing wildly from about 34,000 annual runners just over two decades ago to more than 600,000 now. races typically iss...
Source: archive.org