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