Joining us is Montane athlete Jenny Tough who is one expedition away from completing her challenge to run solo and unsupported across a mountain range in every continent. We speak to her from her home in British Colombia having just navigated the Rockies.

We also speak to Robert Mads Anderson, one of the world’s leading high altitude climbers. He's led new routes on Everest’s Kangshung face and climbed the seven summits solo. His latest book, Expeditions to Everest, tells of his nine trips to the world’s highest mountain, leading groups, and how different personalities react on the mountain. Listen in.