Alastair Humphreys is a British Adventurer, Author and Blogger. He spent over 4 years cycling round the world, a journey of 46,000 miles through 60 countries and 5 continents. More recently Alastair has walked across southern India, run 6 marathons through the Sahara desert, completed a crossing of Iceland, and participated in an expedition in the Arctic, close to the magnetic North Pole. He is currently training for a return journey to the South Pole.