It is possible to start to the north at T09186 80205 A while a more interesting approach can be made across fields and bog from the west starting at T071 806 B. For the former route the OS sheet 62 is reasonably accurate as regards tracks. The latter route crosses farmland so it is courteous to check with local farmers, who have granted access previously.
Preban Hill is forested, and the summit area consists of a junction of forest tracks. The highest point appears to be nothing more than a grassy ridge alongside the junction. A Trig Pillar indicated on the map does not appear to be present on the ground.
Approaching from the west there are good views southwest to Ballycumber Hill, and north to Carrickashane Mountain, Croghan Moira, Ballinacor Mountain and Ballycurragh Hill. From near the summit there are views towards Croughan Kinsella. Linkback: https://mountainviews.ie/summit/854/comment/5613/

Scouting along the minor roads surrounding Preban Hill I stopped to talk to a farmer at a gate at approx T071 806 B. I asked him about access to Preban Hill. He said there were no public paths or access up from this side. He then asked if I was from “The Department”. I explained that I was just a hillwalker. I showed him my rucksack, compass and map. Seeming satisfied he immediately said I could park in his gateway and head up from there with a request that I close all gates. Pondering the mysterious “Department” I headed SE, first across his field and then over fences up into a gorse field. 20 minutes from the car had me up onto the heathery slopes. I came across a small stone cairn, but had to head further east to the slightly higher ground at the 377m spot height at T077 795 C. (For the purpose of this post I will call this Preban West Top) A smaller cairn marked this spot. There were great views back NW to Ballycurragh Hill, and SW to Ballycumber Hill. Looking further north I was presented with new views of Carrickashane Mountain, Croghan Moira and Ballinacor Mountain. I could see the main summit of Preban Hill nearly 1km further east. (T086 792 D) While Preban West Top was a treeless bog, I could see that Preban Hill main top was half covered in forest. I made my way east over the bog, down into the col and reached the trees. I handrailed the trees along a track up to the main summit. Up to now I had felt a relative isolation and enjoyed the quiet bog. Now I was disappointed to find that the main summit area consisted of a crossroad junction of forest tracks. I judged the summit to literally be a grassy lump at the crossroads. The trees obscured views in all directions except to the W and SW. While Preban Hill may be covered in forest, it should be no problem to navigate to the summit from the N, E or S using the good quality forest tracks. However I was more than satisfied with my approach from the west across the bog and had a guilt factor of nil. I retraced my route back to the relatively unspoiled West Top, and then back down to my car. I would strongly advise calling to any local farm for permission to head up from the west side as this involves crossing farmland. Otherwise a route up Preban through its forested sides should be easily managed. Linkback: https://mountainviews.ie/summit/854/comment/3396/

At the summit of Preban Hill you can take your pick as to where exactly the highest point is. I chose the grassy ridge at the SE corner of the crossroads . The grassy ridge is visible in the background of the photo. Linkback: https://mountainviews.ie/summit/854/comment/3397/

As Wicklore says, the summit of Preban is a crossroads. It has trees on three out of four sides. Nevertheless, from the general area of the summit there are some interesting views such as this one of Croghan Kinsella to the south. Linkback: https://mountainviews.ie/summit/854/comment/4282/