Weather: very strong SW wind, rain overnight and drizzling.
Terrain: a short section of asphalt to begin and then into grass/mud trail. Middle section is marshland with a few very short sections of gravel track, then back onto a grass/mud trail on the return. Any grass was "playing field" short.
The first 8km takes you along a raised embankment following the water's edge which despite the weather was very picturesque. You then drop down into the marshland which today was a mud bath for the majority of the middle section before returning parallel to the embankment on a grass/mud track similar to that of the embankment. The grass was short and only livestock I saw were sheep, however it is December. I underestimated just how boggy the marshland would be, and wouldn't recommend the middle section of the route on a rainy day. It's extremely exposed and in the mud very hard going, and there are no cutbacks if you become tired. However, in a dry spell with little wind, it'd be a very pleasant, quiet route.