Derived from the Irish term "Cruach Phádraig," which translates to "(Saint) Patrick's stack," Croagh Patrick is locally referred to as "the Reek." Earlier, it was known as Cruachán Aigle. The term "Cruachán" denotes a "stack" or "peak," while "Aigle" refers to the area's ancient name. Legends from the Dindsenchas mention Aigle as a Connacht prince slain due to a vengeful act. Furthermore, the mountain's name has influenced the titles of the local Marquess of Sligo.

Croagh Patrick's unique quartzite pyramid peak, its visibility, and the myths surrounding it cement its status as a spiritual beacon. The surroundings, dotted with prehistoric monuments aligned towards the mountain, suggest a longstanding ritualistic importance. The nearby Boheh Stone, adorned with over 260 ancient carvings, offers a breathtaking view: from this stone, during late April and August's end, the setting sun seems to glide down Croagh Patrick's slope. Evidence of the Bronze Age is found atop the mountain, which includes the remains of an enclosure and numerous circular huts. Additionally, legends link Saint Patrick to this mountain, where he supposedly fasted for forty days and later banished dark, demonic entities.

The mountain has been a pilgrimage hotspot, especially on Reek Sunday, the last July Sunday. This tradition traces back to medieval times. Pilgrims, some even barefooted, scale the mountain, with masses held at the peak. The current chapel on the summit, dedicated in 1905, carries on a legacy of worship that dates back to the 5th century. 

The pilgrimage's origins might predate Christianity, perhaps linked to the Lughnasadh festival. While most modern pilgrims commence their ascent from Murrisk Abbey, historically, many started from Ballintubber Abbey, following the Togher Patrick pilgrim path. This path is interspersed with prehistoric monuments, hinting at possible connections between ancient and modern rituals. With an annual influx of approximately 40,000 climbers, the mountain faces severe erosion, rendering the ascent increasingly perilous.

The pilgrimage's origins might predate Christianity, perhaps linked to the Lughnasadh festival. While most modern pilgrims commence their ascent from Murrisk Abbey, historically, many started from Ballintubber Abbey, following the Togher Patrick pilgrim path. This path is interspersed with prehistoric monuments, hinting at possible connections between ancient and modern rituals. With an annual influx of approximately 40,000 climbers, the mountain faces severe erosion, rendering the ascent increasingly perilous. Croagh Patrick, with its rich history, spiritual significance, and natural beauty, stands as a testament to Ireland's cultural and religious tapestry.