Car park space at R66276 16811 A. Over or around the gate and head uphill on a good track that crosses the hill near the summit of Seefin Mountain East top.
Follow the track on downhill from the crest and as it flattens out look for a rough, worn track to your left to Seefins summit.
In January 2017 there was work in progress on new boardwalk crossing some of the boggy patches. Linkback: https://mountainviews.ie/summit/397/comment/5156/

A wet day to start (it eventually cleared up) but, having finally located a copy of Map 73 a couple of weeks ago, I struck out for the Ballyhouras. I started at the track R 643 155 B . With some amusement I noted the sign that described this track a "Scenic Mountain Drive" , on a tractor or a 4X4 maybe but certainly not in a car if you want your sump and exhaust still attached at the end of it.I followed the track all the way to the second tractor park at R640 183 C and then across the bog on a very eroded track to Seefin. Then it was down the front of Seefin and on to Long Mountain. I made the mistake of cutting back across the bog to rejoin the track I'd walked up on - I have to agree with s mc auliffe and say its better to stick to the tracks , badly eroded though they are, if you don't enjoy falling into hidden holes all day. The photo is taken from Seefin looking at Long mountain on the right with Ballyorgan village below and Temple Hill of the Galtys in the distance nearly totally obscured by the haze. 9 kms and 2 .5 hours. Linkback: https://mountainviews.ie/summit/397/comment/1662/

Take the road from Ardpatrick to Glenosheen and at 3 Km take a right turn up an incline, after a further 1.5 Km you will reach a forest car park. Starting at the car park R657 184 D follow the road east for a few kilometers until you meet you will meet the intersection of an old road on your left and on your right a track heading up to high ground R662 169 E. The way-marked track provides a steady gradual climb on to the open hillside. At some sections, the track is quite eroded and you will be made appreciate a comfortable pair of walking boots (unlike mine on the day). The track reaches a T-junction and to your right you will see a cairn R653 180 F. This is quiet a nice place for lunch on a windy day as it is built around a hollow in the ground and provides good shelter. If it is too early for lunch, follow the main track from the T-Junction in a northerly direction. Several large boulders and a trig point distinguish Seefin R644 181 G. The track forms another T-junction just below the ascent to Seefin, follow the narrow (at times indistinct) boggy track east as you climb up behind the weathered crags to the trig point. Ahead to the north and a short walk away is Long Mountain. The road is only a short walk to your east R640 183 C. Follow it north until you meet some tracks going into the woods R637 196 H. Follow the main path southeast back to the car park; it’s a pleasant 2.4 kilometer walk through the woods. The area features many tracks and paths; make good use of these as the open ground is difficult to walk on with many areas of soft bog, uneven ground and hidden holes.
A pleasant walk but pales in comparison to its illustrious neighbour the Galtees. Linkback: https://mountainviews.ie/summit/397/comment/2423/

This area is rife with folklore and strange tales... Linkback: https://mountainviews.ie/summit/397/comment/18648/

Nothing to add to the directions provided by melohara. Just to mention two things, the parking place was littered with close to a hundred empty beer cans, it looks like there was a party there or something. The good news is that the boardwalk is completed which is just as well as it goes over some of the worst flooded boggy ground I have seen. Linkback: https://mountainviews.ie/summit/397/comment/20416/