Originally Posted by
Saintsman
If that is the case, then if I take my local airport (Southampton), a 5km range would take up most of the city.
Is this correct?
No.
The restricted zone at Southampton is a circle with a radius of 3.7 km (2 nm) from the centre point of the runway, plus a 1 km x 12 km (approx) rectangle aligned with the runway heading.
So most of the city is outside that zone.