North Bull Island is a UNESCO Biosphere Reserve formed by sand accumulation after Dublin Port's Great South Wall was built in the 1800s. A wide sandy beach runs the length of the island, backed by dune grassland and mudflats that host tens of thousands of overwintering wading birds. The walk is entirely flat and can be done on the beach at low tide or the dune path at any tide.
| Distance | 7 km return (~4.3 miles) |
|---|---|
| Duration | 1.5–2 hours |
| Difficulty | Easy |
| Trailhead | Dublin Bus 130 from Lower Abbey Street (25 min, ~€2 / ~$2.20); or cycle from Clontarf via coastal path |
| Best season | Year-round; winter for birdwatching (overwintering wildfowl) |
| Address | North Bull Island, Clontarf, Dublin 3, D03 Ireland |
Trail facts
- Trail area
- Bull Island, Clontarf, Dublin 3
- Terrain
- Flat sandy beach or firm dune-grass path; wheelchair and buggy accessible on the dune path in dry conditions
What to bring
- Waterproof jacket (exposed to sea winds)
- Binoculars for birdwatching
Weather through the year in Ireland
Best time Shoulder Worth avoiding
Average daytime temperature in °C. Figures are for Ireland.
Location
North Bull Island, Clontarf, Dublin 3, D03 Ireland
53.3659, -6.1834 View on map
Highlights
- Brent geese and wading bird flocks (best October–March)
- Dollymount Strand's 5km sandy beach
- Views across Dublin Bay to Howth Head
- Bull Island Interpretive Centre with free exhibits on the reserve's ecology
Tips for visiting
- Check tide times before walking the beach itself — the mudflats are dangerous at incoming tide; the dune path is a safe all-tide alternative
- Bring binoculars even without birding experience — the winter wildfowl flocks are large enough to see well with the naked eye
- The wooden bridge causeway at the Clontarf end floods at very high spring tides