When George agreed to sign up for his first ultramarathon with his friend Mark, he knew it would be tough. But he was not expecting knee-deep mud, torrential rain, 60mph wind and hail, all while trying to tackle one of the toughest stretches of coastline in the UK - the South West Coast Path.

In the middle of the wettest winter since records began, George and Mark have to cope with treacherous cliffs, flooded trails, injuries, inverted waterfalls, too much food and too much mud.

This short, quick read picks up where Operation Ironman left off and is the prequel to the DNF Series.

The DNF Series is a series of books about George and his family's adventures in running, cycling and swimming. From ultramarathons to triathlons, 10k swims to European cycling adventures, George promises fun and laughter every step, pedal, and paddle of the way.