What is the maximum thickness of walls that a hog rider can jump over? A hog rider can be seen in this video leaping over a triple wide wall.
There is no official number, and user tests suggest it may be limitless; Hog Riders are just meant to jump walls, no matter how thick.
On supercell's user forums people like this guy have done user tests and complained that it appears the wall thickness doesn't matter, the hogs will jump it regardless. It is important to note this post was made in January 2014, Hog Riders could be patched at a later date.