Sir Ranulph Fiennes, Marathon de Sables
Media playback is unsupported on your device

Fiennes plans next challenge after desert marathon

Somerset explorer Sir Ranulph Fiennes has just completed what's described as the toughest footrace on earth, the Marathon de Sables.

Having walked 156 miles (251 km) across the Sahara Desert in six days, the explorer is considering a new challenge.

Clinton Rogers reports.