Overview
Killaloe was Brian Boru’s town. The High King who broke the Viking grip on Ireland ruled from a fort here around the year 1000, when this bend in the River Shannon was about as close as the island came to a capital. The town sits where the river narrows out of Lough Derg, looking straight across the water at its Tipperary twin, Ballina, and for most of its history a single long stone bridge tied the two together.
That bridge is what most people come to see, and there’s good news if you’re on foot. A new road crossing – named, inevitably, the Brian Boru Bridge – opened in May 2025, and the old 13-arch bridge has since been closed to cars. After a trial run through the autumn of 2025, it’s now yours to walk without dodging the single-lane traffic lights that used to govern every crossing.
Keep your expectations calibrated, though: for all the High-King billing, Killaloe is a small place, home to fewer than 1,700 people, and its pleasures are quiet ones – a bridge, a cathedral, a stretch of lake and the hills behind it. If you only have an hour, walk the bridge and climb the short rise to St Flannan’s.
History and the bridge
The town’s name, Cill Dalua, means ‘the church of Lua’, after the 7th-century monastery St Lua founded on a small island in the river. Killaloe’s moment came in the early 11th century, when Brian Boru made his royal seat at Kincora, on the high ground above the town. His fort, Béal Ború, survives as a tree-ringed earthwork about 2km north; it’s free to wander, and it gives the town its clearest link to the man who put it on the map.
A wooden bridge is first mentioned here in 1013, and the crossing mattered enough that timber spans were rebuilt again and again as floods took them. The stone bridge you see today went up in the early 18th century with seventeen arches, later reduced to the thirteen that give it its name. A lifting section was added in 1929 to let boats through, and the whole structure is protected on both the Clare and Tipperary records.
Ecclesiastical Killaloe is worth the short climb. St Flannan’s Cathedral, built between about 1185 and 1225 on the site of an earlier church and rebuilt after damage in the 14th century, holds the Thorgrim Stone – a shaft carved with both Norse runes and Irish ogham, one of very few stones anywhere to carry the two scripts side by side. Just outside stands St Lua’s Oratory, a tiny early church moved stone by stone from Friar’s Island in the 1920s, before the island was flooded for the Ardnacrusha power scheme.
Walking the town
The traffic-free bridge is the obvious walk, the river and the hills opening out on either side. On the Clare bank, look for the Well of Murrough, a spring tied up in local lore.
For more, the Historic Town Trail is a signposted 4.5km loop linking nine waypoints – the cathedral, the courthouse, St Lua’s Oratory and the bridge among them. It’s an easy hour or so, and a good way to fill the gap before a boat leaves. Runners can join the free parkrun held every Saturday morning in Clarisford Park, and on Sundays a farmers market sets up at Between the Waters from 11am to 3pm.
On the water
The Shannon and Lough Derg are the reason to linger. River cruises leave from the town quay – the Spirit of Killaloe runs hour-long trips out onto the lake past Slieve Bernagh and the Arra Mountains, with commentary on the folklore and wildlife along the way. Book ahead in July and August.
For something more active, kayak and paddleboard outfitters (My Next Adventure among them) run guided trips on the sheltered water above the town. Families tend to make straight for the West Lake Aqua Park, billed as Ireland’s largest inflatable water park, moored out on Lough Derg through the summer.
One quieter piece of local life plays out under the bridge itself: a trap-and-transport scheme catches migrating eels here and carries them downstream to the Shannon Estuary, part of a long-running effort to keep the run alive.
Walking and cycling nearby
Head a few kilometres north to Ballycuggaran, where a 7km loop climbs through Crag Wood for the best views over Lough Derg – walk it anti-clockwise – and links into the East Clare Way. The same area gives access to Moylussa, the highest point in Clare, with a boardwalk over the boggier ground near the top and a wide lake view as reward. Down at the shore, the Ballycuggaran Blue Flag beach – one of only nine Blue Flag beaches in the county – is under 5km from the town and an easy swim stop on a warm day.
Cyclists can pick up the Lough Derg Cycleway, a 132km signed route right around the lake that passes the monastic ruins on Holy Island (Inis Cealtra). Bike hire is available in town, and the riverside stretches are flat.
Getting there and practical notes
- Driving: Through traffic now uses the new Brian Boru Bridge; the old 13-arch bridge is for walkers only. There’s parking at the town car park off Main Street and at the Ballycuggaran trailhead.
- Booking: River cruises and guided kayak trips fill up in July and August – reserve ahead.
- Seasons: Summer brings the fullest boat schedule and the Aqua Park; autumn colours the Crag Wood loop; winter walks on the bridge are bracing, so wrap up.
- With children: Keep an eye on little ones on the bridge and near the water; guided kayak trips supply life-jackets.
Nearby
- Holy Island (Inis Cealtra) – a monastic island in Lough Derg, reached by boat from the Clare shore.
- Bunratty – one of Ireland’s most complete medieval castles, with a busy folk park alongside.
- Ballyallia Lake – a quiet spot for fishing and a picnic near Ennis.
Time your visit for a Sunday and you can browse the market at Between the Waters, then walk it off on the bridge – no traffic lights, no cars, just the river running out of the lake the way it has for a thousand years.