How could an airliner as big as B777 make a U Turn on ground?
Turning Radius, as found in a planning document:


28.7m for a Boeing 777-200
34.7m for a Boeing 777-300


Rotating around one a point a bit off the wing to allow both wheels to roll throughout.

Minimum Pavement Width


47.5m for a Boeing 777-200
56.0m for a Boeing 777-300






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Be aware that this is not exactly ideal- visibility from the flightdeck is not great and you do not want the gear running into the grass or edge lights. An Emirates A380 screwed up in Warsaw not too long ago when trying to pull this stunt.

Since this width is not normally provided by the runway (even Heathrow only has 45m and 50m runway width), you will add turning pads at the end unless there are taxiways you can use instead.


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