Having read csd and wicklores hard-won experience, I hereby present yet a third way of reaching the top! Seeing a little further from the shoulders of giants etc.
Start at the forest entrance the others mention at CstTim (T30165 87799)
. Follow the tracks which are fairly accurately marked on the 1:50k to D (T30809 87060)
, up the rising path to E (T30705 86867)
, the "T junction". Turn right and proceed to F (T30561 86974)
on tracks. Turn left and SW along tracks of variable but quite feasible quality until you reach the same attack point as csd mentions at G (T30298 86835)
. There's a faint not great path of around 100m in length to the summit which you definitely need long trousers for because of the furze. The benefit of this route overall is that it is shorter than csd's and mostly easy walking.
The picture shows the summit cairn and trig pillar. There's a view of that well-known-to-Dubliners-beach Brittas Bay.
Note. On one occasion when I visited this summit via the forest entrance mentioned there was a sign saying that there was Coillte (the forest land managers) approved shooting in progress. Be aware if you visit this area through some other access point that there may not be a sign where you enter. Be aware that if you start early in the day shooters may come along later while you are still on the hill. Know that the hunting season is from Sept to end Feb. Consider wearing an orange bib. Linkback: mountainviews.ie/summit/1011/comment/4267/