Mountains & Viewpoints in County Sligo

Two ranges give this list its shape. In the north, the Dartry limestone runs from Benbulben’s flat table-top through Benwiskin and Tievebaun to Truskmore at 647m, wrapping around the Gleniff Horseshoe, a U-shaped glacial valley with a ruined barytes mill on the hill. In the south and west, the Ox Mountains form a long heather ridge toward Mayo, with Knockalongy at 544m the high point and the Sligo Way running the length of it from Lough Talt.

The two are very different visits. Most people at Benbulben walk the forest loop at the foot rather than the exposed summit route, and pair it with Yeats’s grave at Drumcliffe. The Ox Mountains are quieter and need a car; Cloonacool sits at their foot and makes a base for the Sligo Way and the Coolaney bike trails. Between them, the coast gives the shorter walks: Aughris Head has a 4km loop past a WWII lookout, a holy well and a ring fort on the cliff edge, ending at the thatched Beach Bar on the strand.

Several entries here are viewpoints rather than climbs. Knocknashee, a flat-topped hill in the south-west, looks across to Knocknarea, the Ox range and Croagh Patrick on a clear day. The Curlews carry the Gaelic Chieftain sculpture beside the N4. Even the Dublin train earns its place, for the first sight of Benbulben on the approach to Sligo.

Where to start

  1. Benbulben – Sligo's table-top mountain

    The eroded edge of a limestone plateau, and the county's defining outline; the forest loop at its foot suits most visitors better than the exposed summit.

  2. Aughris Head – Sligo's highest sea cliffs Aughris Head

    The county's highest sea cliffs at 30 metres, with a short coastal loop past a lookout post, a holy well and a ring fort between two beaches.

  3. Dublin–Sligo line – the northwest by rail Dublin

    Ireland's only direct rail line to the northwest, running Connolly to Sligo in about three hours and delivering Benbulben as its final view.

  4. Gleniff Horseshoe – A Glacial Valley Loop in County Sligo Gleniff

    A glacial valley ringed by Dartry limestone cliffs, with 19th-century mill ruins, the Benwisken trail and views out to Donegal Bay.

  5. Knocknashee – The Hill of the Fairies South-west County Sligo

    A flat-topped hill carrying one of Ireland's largest Bronze Age hillforts, its 53 acres of ramparts holding cairns and around thirty hut foundations.

15 of 15 shown — tap a pin for the place.

Dromod Railway Station, Sligo-Dublin Line
Dromod Railway Station, Sligo-Dublin Line Sarah777 / Wikimedia Commons / Public domain

Dublin–Sligo line – the northwest by rail

Dublin, dublin

Ireland's only direct rail line to the northwest, opened in full on 3 December 1862 by the Midland Great Western Railway. InterCity 22000 Class trains run from Dublin Connolly to Sligo Mac Diarmada up to eight times a day, covering 216 km (134 miles) in about three hours through Mullingar, Longford and Carrick-on-Shannon. The midland scenery is ordinary until the Shannon crossing and the first sight of Benbulben near Sligo.

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Knocknashee (Cnoc na Sí) Trail, Co Sligo
Knocknashee (Cnoc na Sí) Trail, Co Sligo Courtesy Eddie Lee/Ed Lee Photography

Knocknashee – The Hill of the Fairies

South-west County Sligo, sligo

Knocknashee, the Hill of the Fairies, is a flat-topped Sligo hill ringed by one of Ireland's largest Bronze Age hillforts. Its double ramparts enclose 53 acres holding two Neolithic cairns and around thirty hut foundations, with long views from the limestone summit toward Knocknarea, the Ox Mountains and, on a clear day, Croagh Patrick.

🌳 Outdoor
Mountain Biking, Trail, Coolaney, Ox Mountains, Co Sligo
Mountain Biking, Trail, Coolaney, Ox Mountains, Co Sligo Courtesy Tom Scott, Tom Scott_Atomcreates

Ox Mountains – Knockalongy and the Sligo Way

Sligo, sligo

The Ox Mountains – Sliabh Gamh, the 'storm mountains' – are among the oldest hills in Ireland, thrown up more than 600 million years ago and worn down to a long heather ridge between Sligo and Mayo. Knockalongy, at 544 m, is the high point; the Sligo Way runs the length of the range from Lough Talt; and Coolaney has the mountain-bike trails. St Patrick is said to have built churches on the slopes, which is why they are also called St Patrick's Mountains.

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Benbulben Mountain, Sligo
Benbulben Mountain, Sligo Conor Doherty for Sligo Tourism

Sligo Mountains – Benbulben to Truskmore

Sligo, sligo

The Dartry range gives north-west Ireland its skyline, from the flat table-top of Benbulben to Truskmore, the 647m high point of both Sligo and Leitrim. The rock is limestone carved by Ice Age glaciers, the folklore runs from Queen Maeve's cairn on Knocknarea to the Morrígan in the caves of Keshcorran, and the walks range from a family forest loop to exposed ridge routes.

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Questions people ask

Which Sligo viewpoint is best if we only have a couple of hours?
Aughris Head. The loop is roughly 4km on the coast, taking in a WWII lookout, a holy well and a cliff-edge ring fort, and the Beach Bar sits on the strand at the end. The Benbulben forest loop is the other short option, with Drumcliffe close by.
Can you actually climb Benbulben?
There is a summit route, but it is exposed and most visitors walk the forest loop around the base instead. If you want a serious hill day in the same range, Truskmore at 647m is the high point of Sligo and Leitrim, and Tievebaun is a full day over open bog.
Where do these places cluster?
Mainly two areas. The Dartry peaks, Gleniff Horseshoe, Tievebaun and Benbulben sit in the north of the county toward the Leitrim and Donegal border. The Ox Mountains, Cloonacool and Knocknashee are in the south-west. Coolera, Sligo Bay and Aughris Head are on the coast near Sligo town.
Which ones need a car?
Most of them. The Ox Mountains, Cloonacool, Knocknashee, Gleniff Horseshoe and the Curlews are all rural and spread out. Sligo town is the practical base, reachable by the direct Dublin line, and the Coolera peninsula and Strandhill are the closest of these to it.
When is the best time to go up?
Clear days matter more than season here. Knocknashee's long views to Croagh Patrick depend on visibility, and Sruth in Aghaidh an Aird, the tall Dartry waterfall, blows back up the cliff in a southerly gale. Cloonacool's sheep festival, with free sheepdog trials, falls in September.

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