What the trail is
The Grianán of Aileach, a drystone ring fort on a hilltop above Burt, is the one stop on this trail worth reorganising a day around. The Inishowen Heritage Trail is a free, self-guided route curated by Go Visit Inishowen that links fourteen monuments across the north of County Donegal, and the ring fort is where it starts to make sense.
Two things to understand before you set off. First, this is a driving trail, not a walk: the fourteen stops are spread the length and breadth of the peninsula, so covering them all means the guts of a day behind the wheel, not an afternoon on your feet. Second, treat the fourteen as a starting point rather than a checklist. Inishowen has hundreds of heritage sites, and the trail is Go Visit Inishowen’s pick of the accessible highlights: ancient forts, castles, stone circles and high crosses. The exact line-up shifts as the brochure is updated, so download the current PDF from their website before you go rather than trusting any fixed list.
The stops worth your time
If you only have an hour, spend it at the Grianán of Aileach, above Burt. The circular drystone fort was a royal seat of the Northern Uí Néill and its restored terraced walls give a clear sense of how an early Irish fortification worked. From the open hilltop you look out over four counties – Donegal, Derry, Tyrone and Antrim – and Lough Swilly and Lough Foyle spread out below. Allow forty minutes for the short climb and the views.
The rest of the marquee stops give the trail its range:
- Northburgh Castle, on the shore at Greencastle, is a Norman stronghold begun in 1305 by Richard Óg de Burgh. The gatehouse and lower courtyard survive, and an early 19th-century Martello fort stands nearby, built when the same headland was fortified against a French invasion that never came.
- St Mura’s Cross slab at Fahan sits in the graveyard of an early monastic settlement and is one of the region’s oldest pieces of Christian stone carving, older than the high crosses that followed.
- Carrickabraghy Castle, above Trawbreaga Bay near Carndonagh, is a 16th-century O’Doherty stronghold on an exposed rocky point.
- Bocan Stone Circle is a compact Bronze Age ring set in a sheltered glen, and the Carrowmore and Clonca high crosses, both near Culdaff, are the finest of the trail’s early-medieval carved stones.
Two managed attractions sit close to the route and are worth folding in if you have the time and don’t mind paying: Fort Dunree, a 19th-century coastal battery with a military museum on a headland above Lough Swilly, and the Doagh Famine Village, an open-air reconstruction of famine-era island life. Both keep seasonal hours, so check before you drive out. (Wild Ireland, the wildlife sanctuary you may see listed elsewhere, is a separate attraction at Burnfoot, not a trail stop.)
Practical information
The trail itself is free, and most stops are open at any hour with no ticket booth. The managed sites – Fort Dunree, the Doagh Famine Village – charge admission and run seasonal opening times. Parking is at village car parks in Buncrana, Carndonagh and Greencastle, plus lay-bys along the Inishowen 100 scenic route.
One honest caveat: several of the older monuments sit on private farmland. Landowners here are used to visitors and rarely object, but stick to established paths, keep dogs on leads near livestock, and follow the Country Code. Mobile signal drops in the glens between Bocan and Carndonagh, so download the brochure PDF before you set off rather than relying on it loading at the gate.
Accessibility: most stops involve uneven ground, grassy slopes or stepped ruins. The Go Visit Inishowen office in Buncrana and several village car parks offer level access, and Northburgh Castle has an improved path up from the shore entrance, making it one of the easier sites to reach.
Getting there
The N13 connects Derry and Letterkenny to the peninsula; from Derry the Grianán of Aileach is roughly 30 km, from Letterkenny about 25 km. Bus Éireann routes 242 and 242A run between Derry, Letterkenny and Buncrana, with local services on to Carndonagh, but the trail really needs a car – the stops are too far apart to string together on public transport.
The trail hub is the Go Visit Inishowen office at Railway Road, Buncrana (F93 V0AC; +353 74 936 3451), where you can pick up a printed brochure and ask for current opening times on the managed sites before you commit to a route.
A workable two-day plan
Split the peninsula rather than racing it. On the first day, start early at the Grianán of Aileach, drop south to Fahan for the Mura slab, then run east to Greencastle for Northburgh Castle and the Martello fort, finishing with a meal on the harbour.
On the second, head north for Carrickabraghy Castle above Trawbreaga Bay, take in Bocan Stone Circle and the Carrowmore and Clonca crosses near Culdaff, and end at Fort Dunree if it’s open. Pack for coastal weather whatever the forecast says: the wind picks up on the headlands by afternoon, and the light is best on the western stops in the morning.