Glyn Marston quit smoking and decided to focus on the London Marathon as a goal to help him kick the habit but little did he know what his future held when he set off on his very first training run.
What followed were some of the most gruelling challenges that a man could do on foot as Glyn's desire to run beyond the 26.2-mile marathon distance became stronger, 100km (62-mile) races were simply not enough, and so Glyn was to make a name for himself...