Part two of this gripping documentary picks up elite athlete Mark Beaumont half way through his challenge to cycle round the world in 80 days. With over a month to go and still thousands of kilometres to cover, Mark's steely determination kicks in. The pressure's on to realise his burning ambition - but will he make it? This concluding documentary not only gives a kaleidoscopic tour of the world but an insight into the extraordinary mindset of an elite ultra-endurance athlete.