This was a highly enjoyable and quite challenging traverse, and is based on the route provided by Paul Phelan in his book on hikes in Connemara and Mayo. There are steep ascents and descents, exposed sections, and incredible views across the 12 Bens and into Inagh valley. The Maamturks look beautiful from the summit of Ben Corr.
Also note that after decending the spur from Ben Corr, you could continue along the river and enter the forest to find a forest track and bridge leading back to the main path. This route would be a little easier than continuing along the lower hills and bogs of Derryclare, but we had a plasant sunny evening and wanted to stay in the open.