In 2014, Saunders, with Tarka L’Herpiniere, set the world record for the longest human-powered polar journey in history by completing a 1,795 mile trek to the South Pole and back, in the footsteps of Captain Scott’s last journey. Saunders and L’Herpiniere each hauled 200kg sledges on foot for 69 back-to-back marathons in temperatures as low as -46°C.