AUDIO: Can a marathon be run in two hours?

Chris Dennis reports on the ingredients needed for "the first sub-two-hour marathon."

This article is from the BBC News website. � British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Source: http://news.bbc.co.uk/go/rss/int/news/-/today/hi/today/newsid_9453000/9453922.stm

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