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The M25 is an orbital motorway designed to re-direct traffic travelling from one side of London to the other. It is an extension, at a far greater radius, of the pre-existing North and South Circulars.
Although it is much longer (117 miles) than other examples of orbital motorways in the UK, it isn't unique - Manchester, for example is encircled by the M60 as is Birmingham by the M5/M6/M42.
The longest orbital motorway is the A10 around Berlin, at 124 miles.
What else can I help you with?
What city does the M25 surround?
The M25 is the motorway that goes around London in England.
How old M25 motorway?
The M25 is 31 years old
What motorway runs around the outside of London?
It is the M25 motorway.
What is London surrounded by?
The M25 motorway.
Which motorway circles around London?
It is known as the M25 or the London Orbital and is 117 miles long
What is the route fro Loughborough to London?
The M1 motorway is about 5 minutes from Loughborough Town Centre and goes directly to the M25 and beyond.
What is diameter of M25 motorway?
The diameter of the M25 fluctuates between 24 and 40 miles but its circumference is 117 miles.
Is the M60 Britains longest orbital motorway?
No, the longest in Britain and the second longest in the world is the M25 encircling London.
How long is London's M25 motorway in miles?
117 miles approx
What are the limits of London?
The boundaries of London roughly follow the line of the M25 motorway.
Where is the M40 motorway?
The M42 motorway is a major road in England. The motorway is 55 miles in length and spans Bromsgrove in Worcestershire to Ashby-de-la-Zouch in Leicestershire.
Why isn't there a sign on the M25 motorway telling people that they have crossed the Greenwich Meridian?
There's more important things for a driver on a motorway to be keeping their eyes on, than a sign like that.
