"Ireland's holiest mountain, where Patrick fasted forty days and pilgrims have climbed barefoot for millennia"
Mt. Croach Patrick
County Mayo, Westport-Belmullet Municipal District, Ireland
Croagh Patrick rises 764 meters above Clew Bay in County Mayo, carrying unbroken sacred significance from the Neolithic period to the present day. Known as the Reek, the mountain is where Saint Patrick is said to have fasted for forty days, banished snakes from Ireland, and defeated the forces of darkness. Each year on Reek Sunday, tens of thousands of pilgrims climb this mountain as they have for millennia.
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Quick Facts
Location
County Mayo, Westport-Belmullet Municipal District, Ireland
Coordinates
53.7599, -9.6598
Last Updated
Feb 14, 2026
Learn More
Croagh Patrick has been a sacred mountain for at least five thousand years, from Neolithic astronomical observation through the Celtic Lughnasa harvest festival to its status as Ireland's premier Catholic pilgrimage site. The mountain embodies the full arc of Irish spiritual history.
Origin Story
Multiple narratives converge at Croagh Patrick. In the Christian tradition, Saint Patrick climbed the mountain in 441 AD during Lent and spent forty days in prayer and fasting. Demons assailed him in the form of blackbirds and snakes. He drove them away by hurling his black bell, the Clog Dubh, at them, casting them into the lake at the mountain's north base known as Log na nDeamhan, the Demon's Hollow. He then banished all snakes from Ireland.
In the pre-Christian mythological tradition, Crom Dubh, a dark harvest deity who guarded the grain, was overcome by Lugh at the mountain. The contest between light and darkness, between the forces that release the harvest and those that withhold it, was enacted here annually at Lughnasa. The survival of Crom Dubh's name in Crom Dubh Sunday, which coincides with Reek Sunday, preserves the older narrative within the Christian framework.
Deeper still, the Boheh Stone's rolling sun phenomenon demonstrates that the mountain's astronomical properties were recognized and recorded by Neolithic peoples over five thousand years ago.
Key Figures
Saint Patrick
Naomh Padraig
founder
Ireland's patron saint, who according to tradition spent forty days fasting and praying on the summit in 441 AD, banished snakes and demons from Ireland, and established the mountain as the preeminent sacred peak of Irish Christianity.
Lugh
deity
Celtic sun god associated with the Lughnasa harvest festival. The mountain, anciently called Cruachan Aigle, was believed to be his domain. The festival of Lughnasa celebrated his annual victory over Crom Dubh.
Maire MacNeill
scholar
Folklorist whose landmark 1962 book 'The Festival of Lughnasa' established the pre-Christian origins of the Croagh Patrick pilgrimage, demonstrating that Reek Sunday preserves the ancient Celtic harvest festival.
Gerry Bracken
researcher
Researcher who rediscovered the Boheh Stone rolling sun phenomenon between 1989 and 1992, confirming the mountain's role in a Neolithic astronomical landscape extending back over five thousand years.
Spiritual Lineage
The mountain's sacred lineage begins with the Neolithic communities who carved the Boheh Stone and observed the rolling sun phenomenon. Bronze Age communities developed an extensive ritual landscape oriented toward the peak. Celtic peoples celebrated Lughnasa on the summit, honoring Lugh and the harvest. Patrick Christianized the mountain in the 5th century, and the pilgrimage has been documented from 1113 onward. Pope Eugene IV issued an indulgence in 1432. The Tochar Phadraig was restored from 1987 by the Ballintubber Abbey Trust. Today, the mountain draws over one hundred thousand visitors annually, continuing a tradition of ascent that is among the oldest continuously practiced in Europe.
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