"Bored of repeats on TV and leftovers at Christmas, I decided I needed a new challenge to keep me sane as I entered 2010. And what could be more sane than running the route of the London Underground train lines?
Not convinced? Well then, here are some other reasons that I've decided to run around London's transport network...
1. To explore London – The Tube's a fantastic method of transport but by travelling underground you miss out on all of the wonderful places that the tunnels connect. Running overland combines a great bit of exercise with the opportunity to explore some new areas and build new memories for the familiar ones.
2. For an adventure – It's easy to get stuck into the routines of daily life, especially in a big city like London. I'm using one of its great icons as an excuse to embrace my surroundings, do something new, exciting and challenging and live life as a bit of an adventure. (This is part of my campaign to get people having an adventure everyday).
3. To raise money for the British Lung Foundation – The idea for this challenge came from Laura Tomlinson who is doing all of the runs with me. Laura lost her granddad to asbestosis in May 2009 and so the British Lung Foundation is a natural choice for us to support. You can read more and donate here."
Tim and Laura aim to complete all 12 Tube lines by the end of 2010. So far, they've completed four of the shorter ones and, to clarify, they are running overground (rather than in the tunnels which would be really weird!).