sir Ranulph Fiennes is the oldest person to win the des Sables . Veteran explorer , 71 , said the 256 km course is n't set for old geriatrics like me ' He has paid almost £ 1million for Marie km by completing one - day event .
Sir Ranulph Fiennes is the oldest Briton to complete Marathon des Sables . Veteran explorer , 71 , said the 256km race is n't set for old geriatrics like me ' He has raised almost £1million for Marie Curie by completing six-day event .