Some of the comments are deeply offensive and showing a staggering and selfish lack of respect and regard for the organisers of these type of events. Sure I was disappointed but at about 7 miles out it became apparent what the issues were and the greenway was in a real mess. That was just the top part of it which is much better surface the southern section which is covered on the full marathon. I also finished to find someone really suffering with the cold and needing warm clothing as a matter of urgency. Yes, there will always be a view who were "up for the challenge" or whatever - but there are plenty of off road and mountain marathon type events for these people. This is a predominantly road based marathon for a mixture of runners and the organisers cannot just allow it to go ahead because a small group want a particular type of experience. Any decision was going to have negatives and I think they made the best one in the circumstances.