Gartmorn Dam Country Park
It's very easy to relax in the ambient surroundings at Gartmorn Dam. There is a 2.5 mile circuit around the country park, however I'd recommend turning round at the halfway point (the bridge) and going back the way you came, as it appears to get a bit more rocky an uneven.
There is a cafe at the carpark, it was shut when I visited but I've been told by my secret sources that there's a disabled toilet.
Please watch the clip below that will hopefully give you an idea of the route that is accessible for myself.