Paul, Is there any chance that you can make the maps slightly larger, as longer routes don't fit very well, in the amount of space provided.
Yup, no problem. I don't know why I only made that map box 600x400px when I can get 700px in the width and, as walks are no respecter of direction, that means the map should be square. So it's now 700x700px which means that any walk which has width and height of less than about 6.5km will be displayed at 1:50K by default. That means both of your posted walks with maps now show at 1:50K.
You are just trying to make me do longer walks, you swine!
Joking aside, honestly that's so much better!