Andrew Murray from Edinburgh is a doctor and a marathon runner. In 2010 he devised a journey that would break new ground. With minimal support he planned to run an ultra-marathon every day, from the tip of Scotland to the Sahara desert in Morocco. And to make it more difficult, he'd attempt it during winter. The distance was 2650 miles and he planned to complete it in 85 days, without taking a single day off. The Adventure Show team followed him as he attempted to set a new world record.