Blackstairs Mountains

Overview

The Blackstairs Mountains run north-south along the natural border between County Carlow and County Wexford in the southeast of Ireland. The range is defined by two main summits: Mount Leinster, which rises to 795 m and offers sweeping views across the Barrow Valley, the Wicklow Mountains and, on clear days, the Irish Sea; and Blackstairs Mountain itself, a 735 m peak marked by a metal cross that commemorates two aircraft crashes in the 20th century.

The landscape is a granite core capped by peat-covered uplands. Where the granite meets slate, the terrain shifts into a sharply cut, horn-back ridge that gives the southern slopes their distinctive profile.

Geology & Landscape

The bedrock consists of dark-grey semi-pelitic schist and psammitic schist, overlain in places by extensive peat and dry-heath. This geological contrast shapes the walking experience: the northern approaches feel rounded and peat-softened, while the southern ridge exposes hard slate and dramatic drop-offs.

Roughly 17 % of Ireland’s total dry heath is found here. The habitat supports a mosaic of ling heather, mat-grass, crowberry, bilberry and bell heather, creating a landscape that shifts from deep green in spring to russet and purple by late summer.

History & Local Lore

The Blackstairs have long served as a refuge. During the 1798 Rebellion, the rugged terrain and poor visibility made it an ideal hideout for insurgents, embedding the range into local resistance history. The name itself traces back to the ancient Irish province of Laighin (Leinster), with folklore suggesting a pre-Christian king was buried beneath a cairn in the area.

The southern ridge is known locally as Cahir Rua’s Den, named after Cathaoir na gCapall, an 18th-century chieftain-turned-rapparee who reportedly used the caves to hide stolen horses. Local stories persist that a cache of treasure remains buried in one of the ridge’s crevices. Further along the spine, the Nine Stones form a line of prehistoric standing stones that likely marked ancient droving routes.

Every year, locals traditionally climb the ridge on Mountain Sunday (the last Sunday of July), a custom dating to the 18th century that keeps the area’s cultural ties alive.

A more recent memorial sits 30 m east of the Mount Leinster summit: a metal cross marking the crash sites of a German bomber in 1941 and a Cessna 182 in 1983. The cross provides a quiet, reflective stop for walkers crossing the high ground.

Walking the Range

The Blackstairs cater to both day-hikers and long-distance walkers. Routes are well-defined, though signposting can be sparse, so route planning is essential.

The Blackstairs Mountain Loop Walk

This 13.5 km route takes roughly five hours and climbs to the summit of Blackstairs Mountain before descending via quiet country roads near Enniscorthy. The walk offers continuous views across rolling farmland and distant hills, with a steady but manageable gradient.

Mount Leinster Trail

For a shorter ascent, the trail to Mount Leinster leads directly to the 795 m summit and a viewing platform. The path passes the memorial cross and opens onto exposed heathland, making it a reliable spot for birdwatching.

South Leinster Way

The South Leinster Way is a 104 km long-distance route running from Kildavin (Co Carlow) to Carrick-on-Suir (Co Tipperary). It cuts through the Blackstairs, allowing multi-day walkers to link the range with the wider Leinster countryside. Several sections overlap with the Loop Walk, making it easy to combine a day-hike with a longer trek.

Wildlife & Flora

The upland ecosystem supports species adapted to acidic, nutrient-poor soils. In addition to the dominant heath plants, rare species like bird’s-foot and cranberry (scarce in County Wexford) appear in sheltered hollows. Spring brings carpets of wild-garlic along the dry-stone walls.

Birdlife is a major draw. Golden plovers, merlins, red grouse and wheatears are regular sightings, while hen harriers and peregrine falcons use the open ridges for hunting. Mammals include Irish hares, red foxes, badgers, stoats, Sika deer and small herds of feral goats that have adapted to the rough terrain.

Guided Walks & Local Experiences

Based near Borris, Carlow, Blackstairs Eco Trails offers structured walks that focus on the area’s natural and cultural heritage:

• Foraging Workshops (4 h, €75 per person): Learn to identify safe wild foods, followed by a three-course organic lunch. Book now
• Fungi Workshops (5.5 h, €110 per person): Explore edible and poisonous species with a local mycologist. Book now
• Remarkable Celtic Trees (3.5 h, €65 per person): Walk native woodland habitats and learn about historic timber uses.
• Stargazing Sessions: Evening walks with hot drinks and marshmallows, timed for clear skies.
• Luxury Glamping: Award-winning Shepherds’ Huts provide a basecamp experience with rustic comfort.

Practical Information

Access to the Blackstairs Mountains is free. The most reliable trailheads are the Borris Eco Centre car park (off the R730) and the Scullogue Gap car park (grid reference S 81 37 8, 47 88 4). Both offer short, signposted paths onto the ridge.

Getting There

The range is accessible by road from Carlow (A5), Wexford (N11) and Enniscorthy (R730). Bus Éireann services run to Carlow and Enniscorthy, with local taxis available for the final stretch to trailheads. Nearby towns like Carlow, Borris and Enniscorthy provide cafés, shops and B&Bs. For extended stays, Mount Brandon Cottages in Graiguenamanagh, County Kilkenny, overlook the range, while Woodbrook House west of Enniscorthy offers rooms and garden access.

Dogs & Families

• Dogs are welcome but must be kept on a lead from March to July to protect ground-nesting birds.
• The Mount Leinster Trail is suitable for families with younger children; the Loop Walk is better for older kids or experienced walkers.
• Trails are open year-round, but the summit is exposed and frequently windy. Waterproof layers and sturdy boots are essential.
• Winter conditions can bring snow and ice, which shorten daylight hours but reward prepared walkers with quiet, frozen landscapes.

Navigation & Safety

Mobile signal drops significantly once you cross the treeline. Download the ActiveME app before you head out for offline maps and GPS tracks of the Loop Walk and other routes. Detailed route descriptions are also available on the Blackstairs Eco Trails website. Carry a physical map, a headlamp, and extra food and water, as weather changes quickly in the uplands.

For further information, visit the Blackstairs Eco Trails official site or the Blackstairs Mountains Wikipedia entry.