He is going to learn am important life lesson

BACK BLIPPING
Day out in Thetford Forest. Lots of playgrounds and waymarked paths through the trees.
The life lesson is that a seven and a half mile walk is a lot longer than a seven and a half kilometer walk. No matter how good your map reading skills are, a simple error like that makes a considerable difference. I expect he has learned from this experience and will ensure his father does not repeat it.
Whilst they were doing their trek we sat drinking coffee, eating  ice-creams and watched the world go by.
We won