Aerial view of Westport House, Co Mayo
Aerial view of Westport House, Co Mayo Courtesy Tsung Ho Lam

Ben Creggan – A Wild Mountain Experience in South‑West Mayo

📍 Glenummera Valley, Mayo

🏛️ Attraction

Last updated: 28 April 2026

Overview

Wild Nephin National Park, Co Mayo
Wild Nephin National Park, Co Mayo Courtesy Christian McLeod

Ben Creggan, known in Irish as Binn an Charragáin (“peak of the rocky patch”), dominates the south‑western Mayo landscape at 693 m (2 274 ft). Part of the Ben Gorm Mountains, it sits between the glaciated valleys of Glenummera to the north and Glendavock to the east, with the dramatic Sheeffry Pass and Killary Fjord visible on clear days. The summit is marked by a stone cairn and offers a 360° outlook that includes the Doolough Valley, the Mweelrea massif, the Atlantic Ocean, and, on fine days, the 12 Bens of Connemara.

History & Archaeology

Aerial View, Ashford Castle, Co Mayo
Aerial View, Ashford Castle, Co Mayo Courtesy Búlabosca Films for Ashford Castle

While Ben Creggan is best known for its rugged terrain, it also holds a quiet archaeological legacy. In 2016, a local hill‑walker discovered the skeletal remains of up to ten individuals dating to the Neolithic period (c. 3 600 BC) within one of the mountain’s deep fault lines. These finds hint at ancient activity in an area otherwise celebrated for its natural grandeur.

What to See & Do

The Hike from Glenummera Valley

The most popular ascent begins at a modest parking spot in Glenummera Valley (see Google Maps). The route is 8.15 km out‑and‑back, with an elevation gain of 686 m and an estimated 4.5–6 hours to complete. The trail is unmarked for much of its length, demanding careful navigation across:

  • Steep, boggy ground at the start, transitioning to a rocky ridge.
  • Open fault lines about 2 km into the ridge, some as deep as 15 ft – exercise caution, especially in winter or fog.
  • Moss‑covered, slippery sections near the summit, where scrambling over rock provides the safest footing.

At the summit cairn, you can spot the neighboring Ben Gorm to the south and the Killary Fjord snaking inland. A short detour westward reveals the iconic view over Doolough Valley, framed by the sheer cliffs of Ben Lugmore and the distant silhouette of Mweelrea.

Alternative Route from Aasleagh

For those preferring a slightly longer but less boggy approach, the Aasleagh Falls car park offers a 10.9 km out‑and‑back walk with 832 m of ascent (≈ 3 h 34 min). This route follows a more defined path before joining the ridge that leads to Ben Creggan.

Seasonal Advice

The best months for a dry, firm footing are May, June and September. Autumn can bring early snow in the higher sections, while winter often makes the fault lines hazardous. Always check the local weather forecast before setting out.

Nearby Attractions

Mulranny Beach, Co Mayo
Mulranny Beach, Co Mayo Courtesy Christian McLeod
  • Croagh Patrick – 30 min drive, iconic pilgrimage mountain with coastal vistas.
  • Sheeffry Pass – a scenic mountain drive that showcases the surrounding peaks and valleys.
  • Doolough Valley – a poignant historic landscape, accessible via a short drive or from the summit.
  • Achill Island’s Croaghaun Cliffs – Ireland’s highest sea cliffs, reachable for a day‑trip from Westport.

Where to Stay

The village of Leenaun (Leenane) provides a range of B&Bs and pubs, ideal for a hiking‑focused stay. For a broader selection, Westport offers hotels, guesthouses and self‑catering options. Booking portals are linked below:

Practical Information

ItemDetails
Elevation693 m (2 274 ft)
Prominence88 m
Grid ReferenceL857666
Length (Glenummera route)8.15 km out‑and‑back
Length (Aasleagh route)10.9 km out‑and‑back
Elevation Gain686 m (Glenummera) / 832 m (Aasleagh)
DifficultyChallenging – steep boggy start, rocky ridge, no defined path on summit sections
Typical Time4.5–6 h (Glenummera) / ~3 h 34 min (Aasleagh)
ParkingGlenummera Valley – space for one car only; Aasleagh Falls – free public parking
Best SeasonMay, June, September – dry weather for firmer footing
AccessPrivate road to Glenummera is drivable in dry conditions; check local advice for winter snow closures

Navigation – The ridge lacks a formal trail; a compass and a good map (e.g., Discovery Map 37) are advisable. The open fault lines can be hazardous in snow, so assess conditions before proceeding.

Water – A small pond on the ridge can be boiled for drinking; no streams are encountered on the Glenummera route.

Safety – The final ascent is steep and moss‑slick; stick to the rockier sections where possible. Walking poles are useful on the descent, which can be slippery on the boggy ground.

Getting There

  • By Car: From Westport, follow signs to the Sheeffry Pass and turn right at Liscarney toward Glenummera Valley. The road is narrow; allow extra time for the single‑car parking space.
  • Public Transport: The nearest bus stop is in Leenaun; a taxi from there is the most convenient option for hikers.

Conservation Note

Ben Creggan’s crags, glaciated features and open faults are fragile habitats. Stick to established routes where possible and avoid disturbing the exposed rock faces, especially the fault lines that yielded the Neolithic remains.


Prepared for adventure‑seeking travellers who crave solitude, dramatic geology and unrivalled Irish vistas.