Park in the Nire Valley car park(S 277 128 A )room for 20 cars, but note this fills up fast on weekends, walk up hill on a grassy then heatherly slope from the easten edge of the carpark following approximately a line of white wooden posts.
Walk through a small gate on a sheep fence and follow the track to the Windy gap(S30001 13400 B ).
Do not cross the stile here but turn south east and follow the fence towards Carrignagower until the ground gets steeper and rockier, leave the fence and follow the track which goes west the cuts back to the east again to the wire fence. This avoids a tricky scramble up a large rocky outcrop.
Follow the fence on an easy upward slope then a sandy plateau to the summit cairn of Carrignagower.
Head south for approx. 500 meters on stony and sandy ground before turning south west with a slight uphill across bog for a further 500 meters to the summit of Curraghduff. Linkback: https://mountainviews.ie/summit/1392/comment/18020/