Croagh Patrick is the most climbed mountain in Ireland, and the climb is harder than its 764 m suggests. The trail gains height almost from the first step and finishes on a slope of loose quartzite scree that punishes the knees more on the way down than the lungs on the way up. People do it for the same reason they have for over a thousand years: it is Ireland’s holy mountain, a pyramid-shaped peak above Clew Bay and its scatter of drowned drumlin islands, 8 km west of Westport near the village of Murrisk. Known locally as ‘the Reek’, it is Cruach Phádraig in Irish – Patrick’s stack.
If you only do one thing here, do the full climb on a clear day and give yourself a good half hour at the top for the view down over the bay – it is the payoff, and a cloudy summit gives you nothing back for the effort.
A sacred landscape, long before Patrick
The mountain was a ritual site for thousands of years before it took a saint’s name. Archaeological surveys have mapped a dense prehistoric landscape on and around it – stone circles, fulacht fiadh cooking sites, and Bronze Age burial cairns – and the connection to the harvest festival of Lughnasadh suggests it was a focus of late-summer gatherings. It was originally called Cruachán Aigle, the eagle mountain.
Christian tradition then settled onto the older sacred ground. According to early medieval texts, Saint Patrick fasted for 40 days on the summit in 441 AD, echoing the fasts of Moses and Christ. There has been a church on the peak since the early medieval period: excavations found the foundations of a stone oratory dating between 430 and 890 AD. The white chapel you see today was dedicated on 20 July 1905, built by a dozen local men who hauled the stone and cement up by donkey. The Irish historian William Henry Grattan Flood traced a document issued by Pope Eugene IV in 1432 concerning the pilgrimage, so the custom is documented back to at least the Middle Ages.
Walking the pilgrim path
The standard route is a 7 km round-trip from the Murrisk car park to the summit and back. Most walkers of average fitness reach the top in three to three and a half hours, with the descent taking around an hour and a half. It starts on a manageable incline and then turns to loose scree higher up. A section of hand-carved dry-stone steps was added near the summit in recent years to fight the erosion caused by heavy foot traffic, and it has made the steepest part noticeably safer.
- Difficulty: strenuous. The gradient is relentless and the loose stone demands careful footing, particularly on the descent.
- Footwear: proper hiking boots or trail shoes with real grip. Walking sticks can be hired at the visitor centre (€4, €2 refundable) – worth it for the way down.
- Weather: conditions change fast and the summit is often in cloud when the car park is in sun. Check the Met Éireann forecast and carry waterproofs even in July.
- Alternative routes: the Tóchar Phádraig is a 35 km pilgrim path from Ballintubber Abbey, part of the Celtic Camino. The Croagh Patrick Heritage Trail is an 85 km National Waymarked Way from Knock to Murrisk; it stays mostly at low level and does not take in the summit itself. (A shorter 63 km Celtic Camino variant runs from Balla.)
Reek Sunday and the pilgrimage
The mountain’s calendar turns on Reek Sunday, the last Sunday in July, when up to 30,000 pilgrims climb in a single day and some go barefoot as penance. Mass is said hourly at the summit chapel. It is the busiest and most atmospheric day to be here – and the worst day to come if you want the mountain to yourself or a clear path on the scree.
The pilgrimage carries on through the summer in quieter forms. Garland Friday, the Friday before Reek Sunday, has Westport people carrying wildflower garlands to the base. The Feast of the Assumption on 15 August brings a second wave of climbers, and the Murrisk Pattern in late August pairs a Mass at the nearby friary ruins with music and craft stalls. On any busy day the trail is notably communal – strangers trade encouragement on the steep bits regardless of why they came.
Geology and the rolling sun
Croagh Patrick is built of hard, erosion-resistant quartzite, which gives it that pale grey colour and the steady cone shape. From the top, the view runs across the drowned drumlins of Clew Bay, with the Connemara Bens and Nephin Beg on the skyline when the cloud lifts.
East of the mountain is the Boheh Stone, an outcrop carved with over 260 prehistoric marks. From this exact spot, twice a year in late April and late August, the setting sun appears to roll down the mountain’s northern slope. The alignment likely explains why the stone is where it is.
There is gold under Croagh Patrick too. A seam was discovered in the core in the 1980s, and a plan to mine it was stopped by fierce local opposition led by the Mayo Environmental Group under Paddy Hopkins – Mayo County Council decided against allowing mining on the holy mountain. The nearby Owenwee River (Abhainn Bhuí, the yellow river) hints the deposit may have been noticed long before.
Visitor centre and getting there
The Teach na Miasa visitor centre at the Murrisk car park is the practical base for the climb. It has a café, a craft shop, secure lockers, hot showers (small charge) and an audio-visual exhibition on the mountain’s archaeology and pilgrimage history.
Parking is pay-and-display: €1.20 for the first hour or €3 for 12 hours (2025). The car park fills early on fine days and on Reek Sunday – arrive before 10am in summer or you may be parking on the verge. There is no charge to climb the mountain itself.
Getting there
- By car: follow the N5 to Westport, then the R335 to Murrisk. The car park is at the trailhead.
- By bus: Bus Éireann Route 450 runs six times daily from Mill Street in Westport to the visitor centre, a 20-minute trip.
- By train: Westport station has regular services from Dublin; a short bus or taxi connects to Murrisk.
- By air: Ireland West Airport Knock is roughly 65 km away.
Safety and access
The trail is not suitable for wheelchairs or pushchairs – the gradient is steep and the surface uneven. There are no reliable facilities on the mountain itself, so use the toilets at the car park before you set off. Carry water, food and a windproof layer. Dogs are generally fine on the trail, but check at the visitor centre for any Reek Sunday or seasonal restrictions.
Beyond the summit
Westport is a short drive away, with traditional pubs, good cafés and Westport House. For the islands, the ferry to Clare Island sails from Roonagh Pier near Louisburgh, a half-hour west; or carry on to Achill Island for sea cliffs and Blue Flag beaches. Inland, Wild Nephin National Park and the early Christian village of Aughagower are both within reach.
Come early for the clearest air and the easiest parking, hire a stick for the descent, and keep something in the legs for the last steep pull on the steps – the view over Clew Bay’s islands is best earned, not rushed.