Simon Wheatcroft (middle) ran the Boston Marathon last month with IBM programming the route.

Blind man runs a 250-kilometer ultra-marathon with the help of an app

App is 'like a cross between satellite navigation and the reversing sensors in your car,' says Simon Wheatcroft, who just began a six-day trek across a Namibian desert

Topic |   CNBC

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Simon Wheatcroft (middle) ran the Boston Marathon last month with IBM programming the route.
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