Hi Nix,
The race name is quite accurate - there's plenty of hills throughout (some with steps), stiles, narrow bridges, the stream (with about 2 miles to go) which a few years ago did go past my waist and "Jakes Ladder" at the end which is about 120? steps up a steep hill.
The race depends on the weather - if it's wet there'll be ankle deep mud to contend with and some years a 1/2 mile straight is missed out on safety grounds (I think it was last year?) People sliding down the hills is a common sight, as is trainer-less runners at the finish courtesy of the mud.
As for travelling down from Scotland, it depends how serious you are about running - I find it a really challenging course but you really feel like you've achieved something at the end!