Creag Mhor is normally climbed in conjunction with Beinn Heasgarnich via a low col that connects to the two in a SW to NE running ridge. Creag Mhor can be tackled from either the east or west but the east is by far the most common. Creag Mhor is a remote mountain with a long walk in from whatever direction you choose.
There are 3 main summit ridges. The south east ridge is the most prominent which leads to Glen Lochay. There is a ridge running originally south round the rim of Coire Cheathaich before running south east to run parallel to the previous ridge. The north ridge is wide and expansive and is used to connect to neighbouring Munro Beinn Heasgarnich. The hill is largely hidden due to its remote location and large neighbours, It is only really visible from nearby hills. The Bridge of Orchy hills to the NW make a fine vantage point.
There is parking available at Kenknock in the east and Auch on the A82 in the west but either will require a long walk in.