Lovely views of the Comeraghs, Galtees, Slievenamon and Glenary reward the short trip to the summit from S248193 A, S209207 B or from S22214 21764 C the small road leading off the Mountain Road R678 (See Track 2266 for route details)
Long hill, as suggested by the name, has a flat top marked by a cairn, and as a result, the going can be boggy on the summit.
When descending towards Glennagad (Holy cross above Clonmel) watch out for nice stone markers that are scattered amongst the heather at approx S215201 D. These appear to be the remains of a firing range that was there some years ago. Linkback: https://mountainviews.ie/summit/807/comment/5566/

Long hill can be reached from lay-by above Barravakeen (first right past Clonmel golf club) at S248193 A with plenty of room for cars. Walk up the road, hop the fence and skirt across the top of the Punchbowl to reach the summit.
There is also easy access from Glennagad, via the road up to the holy cross (S209207 B - room for 4 cars). From this side there is a track up the mountain and then a quick trot across the boggy top to the cairn rewards you with excellent views. I suggest you stray off the track and look at the stone markers which can be found amongst the heather on the north of the track. These appear to be the remains of a firing range that was there some years ago. Linkback: https://mountainviews.ie/summit/807/comment/6773/

I did this as part of a three-top loop taking in Long, Laghtnafrankee and Laghtnafrankee SW, returning via the valley to the N to rejoin the track at roughly point S21520. Long Hill itself is aptly named, with a long gentle trek to the top along a good track. Most interesting part was at the start/end as it was June and the rhododendrons were in full bloom (I know they're a pest sometimes, but they do look fantastic.) It was also interesting that the narrow track to access the track (starting at Holy Cross) was via a tunnel of rhododendrons as in pic. Linkback: https://mountainviews.ie/summit/807/comment/23175/

The summit area of Long Hill is quite flat, so it's lucky there's a small cairn to mark the summit or we'd have no point of reference! The forest north of the Punchbowl has been clear felled, but there are nice views to be had north to Slievenamon. Linkback: https://mountainviews.ie/summit/807/comment/3189/

The Punchbowl is a corrie-like formation lying between Long Hill and Lachtnafrankee. You can make out its steep slopes to the left of this view of Lachnatfrankee, taken from the summit of Long Hill. Linkback: https://mountainviews.ie/summit/807/comment/3190/