SportsMarathon-mania in BerlinTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoSports09/23/2017September 23, 2017Top long-distance runners are hoping to break the world record at this year’s Berlin Marathon. Tens of thousands of slower participants will also be running the 42.2 kilometer course. DW takes a look back to the beginnings of the popular event. https://p.dw.com/p/2kZoqAdvertisement