He damaged his Achilles tendon and running even short distances became impossible. He started a rigorous regime of physiotherapy and would occasionally set off for a run, confident the problem was fixed, but would limp home not long after leaving.
It was with baited breath that he began his winter training for the 2014 London Marathon with a group of friends from the Orion Harriers.
Fortunately all went well and John sailed through the marathon last Sunday, using his new GoPro camera to film an up close and personal account of the event, which you can view here:
If the plug in doesn't work, here's the link: youtu.be/2iTcywx2T9s