The view is the whole reason to climb Errisbeg, so save it for a clear day and don’t bother in low cloud: from the 300 m summit you look straight down on the twin white-sand crescents of Dog’s Bay and Gurteen, east to the Twelve Bens, and – if the air is clear – south to the Aran Islands across the Atlantic. The catch, and it’s a real one, is that there’s no path. AllTrails is blunt about it: ‘a hill walk with no distinguishable path… you will have to make your own way.’ Treat this as proper open-bog navigation, not a stroll.
The walk
It’s roughly 6 km there and back with about 300 m of climbing, and most people take three to four hours. A good line starts from Roundstone harbour: walk up Fuschia Lane beside O’Dowd’s, reach a gate after about fifteen minutes, veer left, then pick your way up rough, boggy hillside to the cairn and trig pillar on top. The ground is wet and the route is unmarked, so wear waterproof boots and carry warm, waterproof layers even in summer.
One genuinely important point: phone signal is poor up here. Download an offline map or bring a paper one and a compass – don’t rely on your phone to find the way down if the mist comes in.
What you’ll see
Errisbeg is listed as a Marilyn, a hill with at least 150 m of prominence, and on the South Connemara skyline it stands out for how much it shows you for so little height. Below sit Dog’s Bay, Gurteen Bay and the brown sprawl of Roundstone Bog; the Twelve Bens fill the eastern horizon and the Atlantic the west. The 17th-century Connemara historian Roderic O’Flaherty noted the hill as a sea-mark, the landmark sailors picked out after the Twelve Bens, and the trig pillar beneath the summit cairn still draws orienteers today.
The slopes are blanket bog and acid heath, too thin-soiled for trees, which is exactly why the views are unbroken. In late spring and early summer the hillside colours up with bell heather and gorse, and this corner of Connemara is one of the few places in Ireland for the rare Mackay’s heath and St Dabeoc’s heath. Buzzards and kestrels ride the updrafts along the ridge, and grey seals often haul out on the rocks down at Dog’s Bay.
Practical information
- Parking: the trailhead parking in Roundstone village charges a fee. Some walkers use lay-bys near O’Dowd’s, but spaces are informal and not guaranteed – arrive early in summer.
- Dogs: not permitted on the Errisbeg Mountain trail, which crosses grazed sheep ground.
- Facilities: none on the hill. Stock up in Roundstone before you set off.
- Best conditions: late spring to early autumn for the driest going and the longest light. In winter you’ll want full waterproofs and a head torch for a late return.
- Getting there: drive west from Galway on the N59, then the R341 to Roundstone; the hill rises behind the village. Bus services to Roundstone are limited, so a car is the practical option.
If you want a bed at the foot of the hill, Errisbeg Lodge sits about 1.5 km from Dog’s Bay near Gurteen Beach, with free parking. Check the Met Éireann forecast before you start – the cloud can drop onto the summit fast, and on a pathless hill that turns the descent from easy to awkward in minutes.