How long does it take to circumnavigate the M25?

It'll come as no surprise to anyone who uses it frequently, but the average speed on London's orbital motorway is just over 25mph. That means it takes an average of five hours to circumnavigate the capital over the entire 117-mile route. The next slowest is the M4, another motorway notorious for delays.



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Firstly, I had to plan the route. All I knew was that it would make sense to start and finish at the Dartford Crossing, although at the time I didn't realise that pedestrians couldn't walk across the bridge. The M25 motorway circles London but because it is a motorway, you can't actually walk on the M25 itself.

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Junctions and services The M25 has been criticised for having too many junctions; 14 of them serve only local roads. In 2016, Edmund King, president of the Automobile Association, attributed congestion on the M25 to excessive junctions.

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The A1 also known as the Great North Road is the longest numbered road in the United Kingdom, at 410 miles (660 km). It connects London, the capital of England, with Edinburgh, the capital of Scotland.

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Junction 23 on the M25 in Hertfordshire is the single biggest gyratory on the whole of the National Highways network. At about 1.2km in circumference, the junction sees some of the highest traffic flows on the M25.

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well to be honest, Its always busy on the M25, and severely worse during the rush 6-10am, 3-7pm. 5am is a good time to start out but you'll still pick up conjestion further on. So expect the worse, and keep your fingers crossed, make sure you listen our for traffic alerts on the car radio.

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The concrete slabs with which they were made have proved tougher and longer lasting than asphalt, and over the years have needed very little maintenance.

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Traffic. Near Heathrow Airport, the M25 is six lanes wide in each direction. The M25 is one of Europe's busiest motorways.

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structures on the M25 are the two tunnels in its north-eastern quadrant; the Holmesdale Tunnel at Waltham Cross (between junctions 25 and 26) and the Bell Common Tunnel at Epping (between junctions 26 and 27).

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