First off - I'm bleedin' knackered, running around the tube is surprisingly hard work, that and the rather high temperatures made the day hard, but very enjoyable.

There were a couple of teams running, I teamed up with Ewan as both our planned partners were unable to come. The plan was to use the few overground areas to send updates to my blog, but there simply wasn't the time. When we weren't on trains, preparing for our next run, we were chasing each other through the stations, down streets and across busy roads.

Running from platform to platform our biggest enemies were other people - the more crowded stations slowed us down as people insisted on being two-breast on escalators, or decided to push their baby strollers out in front of the knacked looking man and his friend in a kilt. So it was a bit like driving at work.

Our route was thought up by Ewan, who to give him full credit, didn't laugh when I told him my idea of a route. I had thought that running between stations would be easy - I hadn't counted on our general levels of unfitness. Given that we were against a bloke who was a master of the sprint and someone who had run marathons I didn't hold much hope for our chances.

Mike, a BBC cameraman followed us for part of the way - so if you tune into BBC local news next week and see a 90 second spot with Ewan in a kilt, and myself in a "404 /shirt/tie not found" shirt, well - we worked hard for our shot at fame. There may be further links to extended videos later.

We had some good luck with our transfers - there was nothing better than running to a station to see the exact train that we wanted pulling into the station. But it was counterbalanced by the occasional despair of getting to the platform 10 seconds too late, regardless of how many 'no entry' signs we ignored, or how fast we ran.

Our time was 2 hours, 55 minutes and 39 seconds, the winner (git) came in at 49 seconds faster - beating us into second place, although we did have pride at beating the lads who hold the speed record for the whole tube system.

It was fun, although I often questioned the wisdom of doing it while wheezing my way between stations, but I can now say (with some nerdish pride) that I have at least visited every Zone One station - and not many Londoners can say that.

Just, for the love of all that's holy, let us not make it an annual thing...

It is a miracle that the thumb keyboard that I'm using still works, as it has been through a high temperature wash cycle.
I'm at the start waiting for Ewan to turn up wearing his promised kilt so at the moment I'm looking at the MI5 building, taking photos of it and wondering how many CCTV cameras I'm showing up on.
Time to get a sandwich I think...

So In a few minutes I'm off to race around Zone 1 of the London Underground with Ewan, partly because he is leaving London soon, and partly because it seems like a giggle.
Given my new found internet mobility (in other words I don't have to balance my Pocket PC and Smartphone on my knee trying to line up two IR ports), I shall be attempting to post updates throughout the day. This of course is dependant on when we 'come up for air' as I don't think that GPRS coverage is great underground.
You may also be able to follow us on the BBC as a BBC news cameraman will be following us around for at least part of the day.

I spent hours working on a route, and then when I spoke with Ewan last night, he showed me a route of beautiful simplicity which involves a lot less running around than mine.

So I'm sticking close to him.