I was going to post a very similar question...
I'm toying with the idea of running the London event. I had been thinking that it was a bit inconvenient, because I'm in South London and it starts in North London, so you've put me to shame a bit if you are based in Lincoln.
Judging by the results of most of the MacRumors challenges on Nike+ though I suspect my pace will be a bit slow for most people here!