So how about a walk? Transport for London has a handy walking Tube map which reveals how many minutes on average it takes to walk between stations. And some of the results are quite shocking.

This walk gives a good idea of the dense, medieval compactness of the city section of London and its range ... text below correspond with our map of this walking tour. From Monument Tube station ...

A boy studying his GCSEs who loves the London Underground map is taking on the challenge of walking the length of every single Tube line and when he finishes this quest he's got his eyes on London ...

A web developer is seeking help from the public in the south west of England to verify routes on his national walking map. Dan Raven-Ellison, from Exeter, set up his webpage and app to suggest ...