Ultrarunning legend Dean Karnazes has run 262 miles - the equivalent of ten marathons - without rest. He has run over mountains, across Death Valley, and to the South Pole - and is probably the first person to eat an entire pizza while running. With an insight, candour and humour rarely seen in sports memoirs, 'Ultramarathon Man' has inspired tens of thousands of people - nonrunners and runners alike - to push themselves beyond their comfort zones and simply get out there and run.