The name Sgurr na Lapaich means "Peak of the Bog" in Gaelic. This could be somewhat misleading, as it is a fine mountain with long ridges, deep corries and lochans, culminating in a fine rocky peak. The mountain is linked by ridges to the adjoining Munros of An Riabhachan to the west and to Càrn nan Gobhar to the east. To the south of the main summit Sgurr na Lapaich has a subsidiary summit, Sgurr nan Clachan Geala, listed as a "top" in Munro's Tables. Another minor summit, Rudha na Spreidhe, lies at the end of the mountain's northern spur and gives good views of Loch Monar; this was also formerly classed as a top, but has now been deleted from Munro's Tables. Deep, glacial corries surround the mountain on several sides. To the south-east of the summit the slopes fall steeply into a large corrie containing Loch Tuill Bhearnach, the largest of Sgurr na Lapaich's lochans at around 500 metres wide; further south is a smaller corrie surrounding Loch a' Choire Bhig. Both of these lochans drain into Loch Mullardoch. To the east of the summit is the steep, rocky head-wall of Coire nan Each, which is snow-filled until the late spring.
Ascent routes
Sgurr na Lapaich can be climbed either from Glen Strathfarrar or Glen Cannich. The usual approach from Glen Cannich starts at the parking spot at the Loch Mullardoch dam and begins by ascending the Munro of Càrn nan Gobhar by its south ridge. The route then goes north-west to a col at 796 metres before ascending the broad, grassy east ridge of Sgurr na Lapaich. This becomes rocky higher up, requiring some easy scrambling to reach the summit. The approach from Glen Strathfarrar begins from the hydroelectric power station in Gleann Innis, reached by a 17-mile drive from Struy along a private road; the locked gate at the entrance to this road is opened at specified times to give access to vehicles. Pedestrians and cyclists are allowed through the gate at all times. From the power station a stalkers' path leads to the col between An Riabhachan and Sgurr na Lapaich, from where there is a further climb of over 300 metres to reach the summit. The top of the mountain is marked by an Ordnance Surveytrig point.
Geodesy
Sgurr na Lapaich was the origin of the 6 inch and 1:2500 Ordnance Survey maps of the County of Ross & Cromarty.