Kirkgrain Hass, Little Scaw'd Law, Glenleith fell and Rottencraig Head Loop

This 12 km (7.5 mile) loop in the Lowther Hills gives you a compact but properly upland day: broad grassy ridges, rounded summits, long empty views, and a real sense of exposure despite the moderate overall distance. With around 500 metres (about 1,640 feet) of ascent, it sits well in the medium category, but that rating depends heavily on weather. In clear conditions it is a satisfying hill circuit over Kirkgrain Hass, Little Scaw’d Law, Glenleith Fell and Rottencraig Head; in mist, wind, or saturated ground it becomes a much more serious navigation outing on open moorland.

The route lies in the Southern Uplands near the Mennock Pass and Wanlockhead area of Dumfries and Galloway, with the nearest practical access point being the B797 corridor between Sanquhar and Wanlockhead. Scaw’d Law is one of the notable hills of the Lowther Hills, and its summit area sits on the Dumfries and Galloway–South Lanarkshire boundary. Glenleith Fell is a subsidiary summit on the same broad upland system. (en.wikipedia.org)

For most walkers, the start is best thought of as being near Mennock Pass / the B797 approach from Wanlockhead, rather than a formal village-centre trailhead. The nearest well-known landmark for access planning is Wanlockhead, Dumfries and Galloway, Scotland’s highest village, on the B797. The pass itself runs between Mennock and Wanlockhead and is one of the key approach roads into these hills. (scotlandstartshere.com)

Getting to the start

By car:
The simplest approach is via Sanquhar on the A76, then up the B797 through Mennock Pass toward Wanlockhead. Sanquhar is the main road-access hub, and Wanlockhead is the best-known landmark to aim for if you are approaching from farther afield. The B797 is scenic but narrow in places, and conditions can deteriorate quickly in winter or after heavy rain. (scotlandstartshere.com)

By public transport:
The nearest rail access is Sanquhar station, Station Road, Sanquhar, DG4 6DQ, on the Glasgow South Western Line. From there, local bus links run toward Mennock and Wanlockhead. Current online timetable sources show the 221 bus serving Wanlockhead, Mennock, Sanquhar, Kelloholm and Kirkconnel, while Dumfries and Galloway timetable information also shows service 246 calling at Mennock Village from Sanquhar. Rural services here are limited, so timings should be checked carefully before committing to the walk. (scotrail.co.uk)

The walking itself begins quietly, usually on a faint hill path, ATV track, or grassy line rather than a heavily engineered trail. Expect a steady climb early on as the route leaves the road corridor and gains the open shoulder of the hill. The first section is often the one that feels most awkward underfoot: rough grass, peat-softened patches, and occasional boggy ground can slow progress more than the map suggests. If you are planning with a digital navigation aid, use HiiKER and still be ready for indistinct ground lines where paths fade into the hillside.

Terrain and what the day feels like

Once height is gained, the character of the route opens out into classic Southern Upland hillwalking. These are not craggy mountains, but broad-backed, wind-shaped hills with long folds and shallow saddles. That means the gradients are generally manageable, yet the exposure can feel bigger than expected because there is very little shelter. On a calm day the walking is pleasant and rhythmic; in strong wind it can feel committing, especially on the more open arcs between summits.

Kirkgrain Hass and the approach toward Little Scaw’d Law tend to introduce the day’s pattern: gradual climbing, occasional steeper pulls, then easier ridge travel. The ground can alternate between cropped grass and wetter peaty sections, and after prolonged rain some of the hollows hold water. Good waterproof footwear is more useful here than lightweight trail shoes unless conditions