Overview
Lough Conn (Irish: Loch Con) sits in the heart of County Mayo and ranks as Ireland’s seventh-largest lake, covering roughly 48 km². The lake forms a natural waterway partnership with its southern neighbour, Lough Cullin, linked by a narrow channel that passes beneath the R310 at Pontoon. From there, the River Moy carries the waters eastward to the Atlantic at Killala Bay. The lake’s clear, peat-tinged surface regularly reflects the towering silhouette of Nephin Mountain, creating a classic Mayo landscape that draws anglers, hikers, and photographers throughout the year.
History & Legend
The name Loch Con is deeply rooted in Gaelic mythology. The most enduring legend tells of Fionn mac Cumhaill’s hounds, Conn and Cullin, chasing a wild boar across the plain. The animal’s frantic steps reportedly poured water from its hooves, flooding the landscape and forming the two lakes where the exhausted hounds eventually drowned. A simpler tradition translates the name directly as “the lake of the hounds,” recalling a local chieftain’s dogs that perished while pursuing a wild pig.
Beyond myth, the shoreline carries tangible history. The ruins of Errew Abbey, a medieval Augustinian priory on the western shore, stand as a quiet reminder of the area’s long monastic heritage. Scattered across the surrounding fields, you can also spot megalithic tombs and ringforts, particularly near the Blanemore Forest entrance, which predate the written record by millennia.
What to See & Do
Fishing
Lough Conn is a premier destination for rod fishing. The lake is renowned for brown trout, sea trout, and Atlantic salmon. Anglers typically visit in spring and autumn when fish are most active. While the lake is freely accessible, fishing requires a valid OPW licence. Local tackle shops in Foxford and Ballina stock the necessary permits and can advise on seasonal conditions, bait, and the best shallow bays for casting.
Walking & Hiking
The lake serves as a hub for walkers of every ability, with well-marked trails and clear signage:
- Enniscoe House Loop – A gentle 2.9 km woodland circuit starting from the historic Enniscoe House estate. Ideal for families and birdwatchers, the path stays close to the water’s edge.
- Drumin Wood – A 4.7 km out-and-back trail skirting the shore of Lough Cullin. The route offers consistent water views and a modest 108 m ascent through mixed native woodland.
- Nephin out and back – A 4.65 mi (7.5 km) moderate hike that climbs 2,325 ft to the summit of Nephin. Trekkers are rewarded with sweeping vistas over both lakes and the surrounding Mayo countryside.
- Lough Cullin loop from Foxford – An 8.7 km circular walk that traverses the channel between the two lakes and passes historic stone bridges and quiet fishing spots.
Route maps and GPX files for these trails are available on platforms like Komoot and Outdooractive.
The Lough Conn Drive
For visitors who prefer to explore by car, the 102 km Lough Conn Drive loops the lake’s perimeter. Starting in Ballina on the N57, the route follows the R310 south past the village of Knockmore, climbs to a high-point with a direct view of Nephin, and continues past sandy beaches, small villages (Foxford, Pontoon, Lahardane) and historic sites such as Abbeytown Abbey and Castle Deel. Numerous pull-over spots provide easy access for lakeside picnics, short strolls, and photography.
Wildlife & Nature
The lake’s freshwater ecosystem supports a healthy range of aquatic and avian life. In addition to the prized trout and salmon, the waters hold pike, perch, and roach. Birdwatchers frequently spot whooper swans gliding across the open water, while golden plovers, lapwings, and curlews forage along the muddy shoreline. The surrounding woodlands and hedgerows provide habitat for red squirrels, otters, and a variety of resident songbirds.
Seasonal Guide
- Spring (March–May) – Salmon begin their upstream run, making this a peak window for anglers. Wildflowers colour the meadows, and walking trails are typically dry and comfortable.
- Summer (June–August) – Warmer temperatures encourage swimming in the lake’s sheltered bays and picnicking at roadside lay-bys. Early evenings offer soft light for photographing Nephin’s reflection.
- Autumn (September–November) – Sea trout and autumn salmon remain active. Deciduous trees along the drive turn gold and russet, creating rich backdrops for hiking.
- Winter – Fishing activity slows, but the area remains quiet and atmospheric. Wintering waterfowl are more numerous, and the lack of crowds makes for peaceful walks.
Practical Information
Lough Conn is freely accessible with no admission fee. Parking is available at most trailheads, including the Enniscoe House estate, the R310 turn-off near Knockmore, and designated lay-bys along the scenic drive. Public toilets can be found at the main lay-by near Pontoon and at the Foxford visitor centre. Picnic tables and benches are scattered throughout the drive’s pull-over spots.
The main access points are the villages of Foxford, Pontoon, and Crossmolina, all easily reachable by car. Public transport to the lake is limited; driving from Ballina (approximately 15 km) or from Castlebar via the R310 is the most reliable option. Dogs are welcome on most woodland and lakeside paths, but owners should keep them on a lead where livestock are present and follow local signage.
For navigation, enter 54.037332 N, 9.247069 W into any GPS device. If you plan to fish, remember to purchase your OPW licence in advance or at local tackle shops, as enforcement is common during peak seasons.