How far would you push yourself for a cause you believe in?Australian CEO Mina Guli, 48, is on a mission to draw attention to the global water crisis. In order to do that she attempted a physical feat so extreme, most people would consider it impossible -- running 100 marathons in 100 days across the world.Mina is driven by urgency: By 2030, it's estimated the demand for fresh water will outstrip supply by 40 per cent.But when her body literally broke during marathon 62, Mina thought all was lost.Unexpectedly, the campaign took on a life of its own.

Starring:

Leigh Sales, Caroline Jones

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