Maumtrasna and Devilsmother form a logical circuit above the valley culminating in Killary Harbour. Despite often being climbed together the brutal steepness of many of their slopes has prevented a consensus being formed as for the best route...this is just my version. I did the walk solo with limited time, but the recent good weather rendered conditions underfoot benign...as others have suggested some inclines hereabouts are properly awkward when wet.I used the route suggested in Paul Phelan's Connemara and Mayo guide to gain the Maumtrasna plateau: this follows the Glennacally River south and then the Glenfree River east. An incipient stream flowing down from the plateau provides a straightforward ascent with the steepness of the valley sides being easily mitigated with sensible route selection. Once aloft the going is reasonably easy to Maumtrasna's highest point.The walk on over Glennagleragh Mountain and Knocklaur is largely guided by a fence and is mostly grassy underfoot, with the onward descent from the latter needing a bit of care. A steady pull to the Devilsmother ridge deposits you just north of the summit with an easy out and back visiting the top. Next is the highlight of the journey (in good conditions), the descent of the north ridge over a couple of intervening summits but with a quite magnificent view to Killary Harbour to prompt endless photo stops.The descent from the ridge is very steep whichever route is chosen. I had to do it at express pace owing to impending darkness, but on the upside this meant I was on the ridge in optimum conditions for photography. On the right sort of day this is something of a classic, and highly recommended.