I'm thinking about the berlin marathon. I suspect based upon my hm time that a reasonable target time would be under 6 hours though as it is my first marathon I would aim to complete. I like the idea of the berlin marathon as it is in september which would give me lots of summer training hours. It is close to my birthday. I understand it is a fast marathon which suggests it is flat. What are peoples experience of this marathon and which one did people choose for their first?