Mark Beaumont, who broke the record for pedalling around the world is back on the road. This time the adventure promises to be more exhilarating and agonising - Mark's journey will take him from Alaska, USA to Ushuaia, in southern Argentina; cycling the length of the Rockies and Andes, 13,000 miles through 12 countries. He'll also attempt to reach the summits of the highest mountains in North and South America. For nine months, Mark will self-film his intimate adventure at bike speed.