Alastair Humphreys is a British Adventurer and Author. He spent over four years cycling round the world, a journey of 46,000 miles through 60 countries and five continents.

More recently Humphreys has walked across southern India, rowed across the Atlantic Ocean, run six marathons through the Sahara desert, completed a crossing of Iceland, busked through Spain and participated in an expedition in the Arctic, close to the magnetic North Pole. He has trekked 1,000 miles across the Empty Quarter desert and 120 miles round the M25 — one of his pioneering microadventures. 

He was named as one of National Geographic’s Adventurers of the Year for 2012. In 2023, The Royal Geographical Society gave Humphreys the Ness Award for "his long-standing contributions to promoting a greater understanding of our world and wider public engagement with the outdoors."