Carrigwadra, the SE spur of Crohane, can be reached from the informal but traditional parking at W03678454 A which is at the end of an extremely potholed road reached from the N22. Go south along the pilgrims path into the extremely scenic vee between Bennaunmore and Crohane SW to the south end of L. Nabroda. Then go west 2.2km. Route finding is difficult in the complex land to the south of Crohane and it may be easiest to climb Crohane SW first. Round trip time using the same route is around 3.5 hours and it is likely to be easiest in dry spring weather when the vegetation is somewhat subdued.
It is also possible to reach Carrigwadra from Crohane, for example starting at W 042 851 B. Note that the north and east sides of Carrigwadra have significant cliffs. Further uptodate research will probably also confirm an earlier report that Carrigwadra can be reached from the Loo valley to the south.
Carrigwadra is a rough summit in a rough desolate area however the wilderness effect is mitigated by the wind farm to the south. Linkback: https://mountainviews.ie/summit/718/comment/5477/

I started my walk at W 042 851 B at a yellow cottage with a very friendly elderly lady, who even gave me some advice; "Follow the path untill you come to the sheep wire and then onto the mountain". It was an easy enough ascent to the summit of Crohane. I then followed magnetic bearing 138 to Carrigawaddra. Use this bearing only to determine where the peak is, as it is not possible to exactly follow the beeline unless you bring waders with you. It is a low-ish peak which has a terraced north west side, some mini scrambles to be found here. Then onto Crohane West Top. Again very wet ground, so you'll have to stay on the higher parts which unfortunately will make the journey a bit longer. After that I had to dog-leg it back to the slopes of Crohane. To skirt around the mountain you have to go up again to approx. 450-500m as the ground is quite rough and very steep on the north west side. Then back to the yellow cottage. Linkback: https://mountainviews.ie/summit/718/comment/4028/

Richard Mersey in "The Hills of Cork & Kerry" mentions climbing Carrigwadra from the Loo Valley to the south, starting presumably somewhere near W084813 C on the R569. On p91 he says "... And so I struck over Carrigawadra. The lower slopes here are exceedingly rocky and vegetated. Soon I gained a great waste of featureless ground, with many a rocky shoulder between me and Crohane."
He made it to Crohane and back to the road in 3 hours which is good going. It took us (with me being the slower) around 53 minutes to go just from Carrigawadra to Crohane.
The picture shows some of the rough confusing ground with multiple tilts and twists to get to the rock of the dog. The skyline mast is Mullaghanish TV transmitter. Linkback: https://mountainviews.ie/summit/718/comment/6748/