Earlier quoted context omitted.
> You could get from any point in London to anypoint for less than an hour only by rail and walking. Whilst in general I agree with the sentiment of your comment, this is not true. Lots of residential areas in Greater London will have ~20 min walk to nearest tube or overground, and if you're going across the city, the train part of your journey can definitely be > 40 min. As an example, I've got two friends, one live…
> I've got two friends, one lives in Wimbledon (far south), the other in Barnet (far north). That isn't a fair assessment. Metro lines are used to enhance mobility within urban areas. Their goal is to replace cars and 20-30min walks with a 5-10 metro ride with an additional 5min walk. That's why typically subway stations are placed about 500m to 800m apart, and the system's commercial speed is designed to be around 5…
Taking London as an example, there aren't many ways to cross London in such a way using commuter rail (ThamesLink currently and Crossrail in the future are probably the only two?). Most people would still use the tube.
That's why 1hr + journeys in London are not uncommon.
(edited to add) London and New York are also much much larger cities than Madrid. It's not really a fair comparison.