Today I took 6 photos on a wide angle lens from Felixstowe end of Trinity Quay and went completely around the Stour Estuary as far as my viewfinder could pick up images, the angle covers 180 degree and if you were to walk this, according to Ordnance Survey maps for the area, would extend beyond 5 miles
I placed these 6 photos in a Panorama Studio and got this>>>>>>amazing [you will need to scroll the page to get the full width!]