Parked at Boranaraltry Bridge, west of Glencullen village, where there is parking for maybe 6 cars either side of the bridge. You reach the bridge by heading down a cul de sac which is also itself part of the Wicklow way. Followed the wicklow way south eastward to Raven's Rock, then headed west over Prince William's Seat and Knocknagun. Continued west over Glendoo, this is not the nicest part of the walk, though there is a view towards the Bray loughs and Kippure, as well as Maulin and the Tonduffs to the South.
After reaching Glendoo navigation becomes a bit trickier, the Dublin Mountains map by EastWest mapping was invaluable. There is a right turn as you head for the north side of Cruagh woods which is easy to miss. I ended up continuing towards Kilakee and had to double-back. There are also then a series of short-cuts marked on the map through the forest to the road at Tibradden, which prove useful if you want to shorten it. From there the tracks of the Dublin Mountains Way make everything easy.
Having passed over Tibradden, at this stage in a lather of sweat and muck from my travails on Glendoo, the passing families might have been forgiven for giving me a concerned glance. I added in Fairy Castle and dropped back down along the wicklow way. I spotted a good deal of litter along the road and picked up as much as I could.