Like many ways up this route is wet underfoot. The route starts with parking in the Slieve Sneacht Centre in Dumfries. The parking is excellent and free here, however as of 2021 the facilities advertised on their website are, apparently, rarely available such as the "Showers ..", "Fully fitted kitchen .."
The route up follows a public road that leads to a green road that eventually peters out onto boggy land with only sporadic tracks.
The route down heads towards the col between Slieve Snaght and Slieve Main. The day we were there was extremely wet and windy, so we cut route short at that point and returned. The route back is also extremely boggy and wet.