On the 23rd January myself and 32 others will be starting an attempt to run 7 marathons in 7 days on the 7 continents around the world. The challenge starts on a glacier in Antarctica and then travels through Chile, Miami, Madrid Marrakesh, Dubai before finishing in Sydney. I will have 168 hours to cover 183 miles with around 60 hours of flying thrown in for good measure.
Nowhere compares to Antarctica for observing nature at its most elemental. While the journey today is a far cry from the treacherous, ice-thwarted voyages once faced by 16th-century navigators, an expedition cruise still has a touch of the intrepid. Go at the tail end of summer and you'll be in for a wildlife treat.
ailing the Endurance down the curving arm of the Antarctic Peninsula, Shackleton planned to disembark with six handpicked men and attempt a death-defying 1,800 mile trek across the Great White Continent on foot: through the South Pole and straight out the other side until they hit the frozen coast again.