Stock Photo - Contestants running in a stairwell in Hanover, Germany, 18 February 2017. The contestants have to run up and down the stairs of a thirteen storey building in the city 194 times within 15 hours (42,192 kilometers). Athletes from Austria, France, Luxembourg, Switzerland and Germany are participating. The current record is 10 hours, 15 minutes and 59.5 seconds. Photo: Peter Steffen/dpa | usage worldwide. - Hanover/Lower Saxony/Germany

Stock Photo: Contestants running in a stairwell in Hanover, Germany, 18 February 2017. The contestants have to run up and down the stairs of a thirteen storey building in.

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