The shortest way up is from the Feystown Rd. due S from Glenarm at D310123 A. Cross the stile and follow the way marked route for the Antrim Hills Way. This follows a track on the left side of a field and go up over the shoulder of Crockandoo. Continue up over rough grassland and then peaty ground, crossing two stiles on the way. The top of the hill is marked by a trig. pillar and is a grand vantage point for views S to the Belfast Hills and the more distant Mournes and W to lonely Slemish and the Sperrins. Alternatively for a longer and much more satisfying walk take the Ballycoose Rd. W up from the B148 at Cairncastle D359075 B to the car park on the Feystown Rd. at D333073 C. This route is also facilitated by the Antrim Hills Way. Cross the stile and head N up hill along the plateau edge for some 1.8 km to Scawt Hill. After a further 2km, passing a standing stone on route, the way marked trail swings around to the left (W) to the summit. On the way up there are constant views out across the North Channel to Scotland. If transport allows a combination of both routes can give a very satisfying walk. The OSNI 1;25,000 Activity Map for the Glens of Antrim is very useful for walking in this area. Linkback: https://mountainviews.ie/summit/1076/comment/15320/

After reading about it in the Ireland lonely planet walking guide ,did the second leg of the Antrim Hills way from the Larne- Ballymena road jump off point to Glenarm the day after the hurricane last October. I had done the Lagan towpath from Belfast to Lisburn the previous day before things stared to get out of hand in the evening with the trains not running , and just made the last bus back to Belfast at 4pm and then on to Larne before they shut everything down, by the skin of my teeth. Vicious night in Larne but it had calmed by the following morning so I got on the Ballymena bus. The driver wasn't sure where I needed to get off , luckily I correctly guessed it - a laybye on the left side of the road with a litter bin which I remember because a council guy came along in a van and emptied it. Cross the road , head back towards Larne and then at the sign for the Ulster way make your way through a very unpromising looking grassy track into the forest to emerge soon after on the open ground.
Had the whole length of the trek to myself maybe because of the hurricane hangover but only a bit of temporary mist encountered on Agnew Hill, just a few sporadic showers and the wind was fine. Some fine sunshine. Some of the waymarked posts on the first half of the walk had blown down but were still visible. One of the best walks in Ireland IMO. Started late at 11AM. This is the summit of Black hill coming up to 5PM looking southwest to Slemish about 10 miles away as the crow flies.
Still another hour and a bit to descend to the road and walk on to Glenarm. 13 miles according to LP guide though it felt like more. Linkback: https://mountainviews.ie/summit/1076/comment/19873/