Overview
Lough Colmcille sits just north of Milford in County Donegal, at the centre of the Colmcille Trail, a 7.5 km loop graded medium that begins and ends in the village. The route climbs out of the town onto a traffic-free forestry track, then follows a car-free road east of the lake – a 2.5 km stretch closed to traffic, and the quietest part of the walk. It is a straightforward circuit with gentle climbs and uneven ground, and free parking is available near the trailhead. The walk is open all year.
History & Legend
The trail takes its name from St Colmcille (St Columba), the sixth-century Donegal saint and scholar. Local folklore even blames him for the lake: refused food by a hard-hearted chieftain, the story goes, Colmcille cursed the man, and a spring burst up beneath his castle and swallowed it, leaving the lough behind. Whatever its origins, the water and its shore carry the marks of long settlement, from early ruins to standing stones.
As you follow the lakeside path, you’ll pass a seventeenth-century graveyard and church ruins, a cluster of standing stones, and the remains of an eighteenth-century Covenanter meeting house and school. These sites reflect centuries of local worship, community resilience, and the shifting religious landscape of rural Ireland. The trail has been maintained and improved by local volunteers and community groups, ensuring that the path remains passable and the historic sites are preserved for future visitors.
What to See & Do
The Colmcille Trail is as much about the journey as the destination. The central 2.5 km stretch runs directly alongside the lake, closed to cars, where a rough track and occasional benches give space to pause and take in the water – though this eastern section can be wet and rough underfoot, so keep your boots on. Early morning and late afternoon, with the surface still, are the best times for photographs.
Wildlife watchers will find the lake and surrounding mixed woodland rewarding. The clear waters attract swans, wildfowl, and the occasional kingfisher, while the trees above are regularly patrolled by buzzards and sparrowhawks. Spring and autumn bring migrating waders to the shallows, making those seasons particularly lively.
The route is well-suited to families and dog owners. Benches are spaced at intervals, and the traffic-free sections make it easy to let children or dogs wander safely. Afterwards, head back into Milford or the nearby village of Kerrykeel for coffee, tea, or a light meal. If you want to make more of the saint, the Colmcille Heritage Centre on Lough Gartan – Colmcille’s reputed birthplace, a drive south near Churchill – is a separate site well worth pairing with the walk, though check its seasonal opening first.
Practical Information
- Length & Time: A 7.5 km loop; allow 1.5–2 hours at a relaxed pace.
- Difficulty: Easy to moderate. The lakeside gravel section is rocky and uneven, while the forest road is firm but not smooth.
- Accessibility: The route is not suitable for wheelchairs, buggies, or small scooters due to rocky terrain and inclines. Strollers can be used on the paved road margins where available.
- Opening Hours: Open all year, no gates or timed entry.
- Admission: Free.
- Parking: Free parking is available at the Milford Public Services Centre and along Glenallen Road. Additional limited roadside spaces can be found near the forest road entrance.
- Getting There: The lake is easily reached by car via the N13 and R261, which both pass close to Milford, with road signage to the main parking area. Milford is also served by local buses from Letterkenny; check current timetables before relying on them.
- Best Time to Visit: Summer offers the longest days and drier ground, but spring and autumn provide the best birdwatching and fewer walkers. Winter visits are quiet and atmospheric, though the gravel track can become muddy or icy after heavy rain.
- What to Bring: Comfortable walking shoes with grip are recommended for the rocky sections. In winter, waterproof layers and a headlamp are advisable as the trail is unlit. Bring a reusable water bottle and take any litter back with you, as there are no bins on the route.
The Colmcille Trail works best as a standalone half-day walk or as part of a broader Donegal itinerary. Start early to avoid the midday wind, keep a notebook handy for the standing stones and ruins, and take your time on the lakeside stretch where the trail truly opens up.