Subscribe for more: bit.ly/subscribetoGWR The fastest speed on a gravity powered snow sled is 134.368 km/h (83.49 mph) and was achieved by Guy Martin (UK) on the set of Channel 4's "Speed with Guy Martin" in Grandvalira, Andorra, on 10 January 2014 Welcome to the official Guinness World Records YouTube channel! If you're looking for videos featuring the world's tallest, shortest, fastest, longest, oldest and most incredible things on the planet, you're in the right place. LIKE us on Facebook: www.facebook.com/GuinnessWorldRecords FOLLOW us on Twitter: twitter.com/gwrnews Find out more: www.guinnessworldrecords.com/ Add us to your G+ circles: bit.ly/GWRgplus

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