Overview
Tully Mountain, known locally as Letter Hill (Cnoc Leitreach in Irish, meaning “hill of the hillside”), stands as a distinctive monadnock on the north-west edge of the Renvyle Peninsula. Rising to 356 m (1,168 ft), it climbs abruptly from the surrounding coastal farmland, creating a dramatic silhouette against the Atlantic sky. Historically, the hill served as a vital navigation marker for fishermen and farmers working the Renvyle coastline, and it remains one of the most rewarding short hikes in Connemara.
Despite its modest height, Tully Mountain is ecologically significant. It holds Special Area of Conservation (SAC) status, protecting a rare mosaic of blanket bog and dry heathland. The summit offers unobstructed views in every direction, from the rugged Twelve Bens to the west, across to Mweelrea and Croagh Patrick in County Mayo, and eastward toward the islands of Inishbofin.
The Walk & Route Options
The standard route to the summit is a straightforward out-and-back trail covering approximately 4.5 km (2.8 miles). Graded as moderate, the path gains around 330 m in elevation and is marked with yellow trail blazes. The lower section follows a wide, grassy track that gradually narrows as it climbs the eastern flank. Walkers should expect soft ground and peat hags, particularly after rain, so sturdy boots with good grip are essential.
A secondary loop option adds roughly 400 m to the distance, diverting along the western ridge before rejoining the main path. This extension offers closer views of the Atlantic coastline and quieter sections of heathland, but the ground becomes rockier and steeper. Most hikers complete the standard route in 1.5 to 2 hours, depending on pace and photo stops.
The trail is dog-friendly, but owners should keep pets on a short lead, especially near the upper ridges where nesting ground birds and occasional livestock may be present. The summit itself is open and windswept, marked by a concrete trig pillar surrounded by a small stone cairn.
Landscape & Wildlife
Tully Mountain’s character is defined by its peatland ecosystem. The upper slopes are threaded with purple moorland heather, cross-leaved heath, and scattered dwarf birch. In late spring and early summer, the bog comes alive with meadow brown butterflies and small heath moths, while skylarks, meadow pipits and curlews perform their aerial songs above the open ridges.
The SAC designation protects these habitats from drainage or commercial peat extraction, preserving a landscape that has remained largely unchanged for centuries. Stonechats are a constant presence on gorse and heather, while red grouse may be flushed from dense bog vegetation. Merlin – Ireland’s smallest falcon – occasionally hunts the open ridges, and peregrine falcons can be seen hunting over the coastal cliffs below on clear days. Common lizards bask on south-facing granite outcrops in warm weather. The isolation of the hill means visitor numbers remain low, offering a peaceful escape from the busier trails near Benbaun and Benbrack.
Practical Information
Getting there The trailhead is located just outside the village of Tully. Citylink Route 923 runs from Galway Coach Station to Letterfrack in approximately 1 hour 45 minutes. From Letterfrack, follow the N59 west to Renvyle, then take the local road toward Tully village. Check current timetables at citylink.ie before travelling, as the last return from Letterfrack is typically early afternoon. The path starts near the harbour, clearly marked by a wooden signpost.
Parking & Access Free parking is available in a small disused quarry and a roadside lay-by near the village quay. Both areas are unrestricted but have limited capacity, typically accommodating only a handful of cars. Arriving before 10 am on weekends or during peak summer months is strongly advised. There are no ticket machines, entry fees, or opening hours.
What to pack
- Waterproof jacket and trousers (Atlantic weather shifts rapidly)
- Sturdy hiking boots with ankle support
- Snacks and at least 1 litre of water per person
- Map or offline GPS (phone signal can be patchy on the upper slopes)
- Windproof layer for the summit
Safety notes The western ledges become slippery when wet, and the summit exposure means wind chill can be significant even in summer. The trail is usable year-round, but winter conditions may bring ice or deep snow, requiring appropriate gear and experience. Leave no trace: all waste should be carried out, and off-trail shortcuts through the bog should be avoided to protect the fragile peatland.
Exploring Further Afield
Tully Mountain works well as part of a broader Connemara itinerary. The harbour at Ballinakill Bay is a short walk from the trailhead and offers excellent rock-pooling when the tide is low. Just south of the village, Trá na mBean (Ladies Beach) provides a sheltered stretch of sand ideal for a post-hike refresh. An Trá Mór, a wide sandy beach a short drive north, is popular for walking and swimming in warmer months. For those with time and energy, the Connemara National Park trails to Benbaun and Benbrack offer more challenging terrain and contrasting views of the inland maam valley.
Start early, check the tide times if you plan to explore the harbour, and allow yourself time to sit quietly at the trig pillar. The Atlantic light shifts quickly here, and catching the sun breaking through the coastal cloud is worth the climb.