Marathon des Sables

The Marathon des Sables, or MdS, is ranked by the Discovery Channel as the toughest footrace on earth. Competitors have to take on five and a half marathons in five or six days across the Sahara desert.
Read MoreA team of six wounded servicemen and women, four from the UK and two from the US took on an incredible challenge and walked 1,000 miles across Britain over a period of 72 days. The walk began in Scotland in August and finished at Buckingham palace on the 1st November.