There is parking for several cars at V67129 89455 A. Walk 100m south along road to a gate and stile to a section of the Kerry Way. Follow this excellent track south for about 1.5km to the col between Seefin and Coolroe and about 330m ascent.
Turn NE, following a narrow trail up through the heather. It’s steepish at first but soon eases. The trail (which comes and goes) loosely follows the line of a fence most of the way to the top, and is boggy in the flatter sections. Eventually after about 2km the slope steepens a little and you will see the summit area marked by a trig at the eastern end and a white cairn to the west. Linkback: https://mountainviews.ie/summit/480/comment/5239/

Parked the car at Glenbeigh on the N70 by the sports ground as suggested by seán Higgisson in his book "A Walker's Guide to Killarney" - walk 13 Glenbeigh Circuit. Followed the road to the left past the church along the Kerry Way. As we didn't end up doing the complete circuit of Seefin we could have saved ourselves 20 mins of road walking by parking by the picnic bench at the junction of the lane at V666 900 B. You could squeeze 4 or 5 cars in easily here, but the middle ones would be hemmed in by the end ones. Follow the lane upwards and turn right over the small bridge. There is a Kerry Way sign here but it has become somewhat hidden by the surrounding flora. We only noticed it on the way down. Cross the style at the end of the lane and continue up the rough track. Towards the top there is another Kerry Way sign to reassure you that you are on course. Somebody has thoughtfully provided a bench so that you can sit down and admire the sign. Or the view over Rossbehy. At the top of windy gap turn left and follow the fence all the way to the top of Seefin, about 30 mins. There is a fair amount of bog around, but it was mostly very dry the day we were there. The worst of it is nearer the fence, so best to follow the sheep's advice and keep to their tracks over to the left. The summit is fairly flat and featureless and strewn with red rock. There is a trig point at the southern end and a small cairn made of white quartz to the north. Great views in all directions of the Reeks and Dingle. From the top of Windy Gap Coolroe is easily accessible; if it hadn't just started to rain and there wasn't a rush on to get back to catch the end of the golf. Beenreagh is not much further, and the really keen could keep going all the way to Drung. Linkback: https://mountainviews.ie/summit/480/comment/3110/

For a short circuit with excellent and extensive views over Caragh Lake, park at V70355 91048 C with space for a few cars. Follow the Kerry Way track initially and then climb south westwards to the top of Suí Finn. To descend, follow the eastward spur skirting an area of mixed larch/spruce forest. Rejoin the road at V70579 89906 D, with a short road walk back to the car.

The photo is of Suí Finn from Carrig Country House Linkback: https://mountainviews.ie/summit/480/comment/23618/