A vast swathe of wild mountain scenery just south of Dublin — Ireland's largest and only eastern national park, home to the haunting 6th-century monastic settlement of Glendalough, nine waymarked trails, and some of the country's finest hill-walking.
The park's signature hike: a strenuous 9.5 km loop (approx. 3 hr 15 min) climbing 380m onto the iconic Spinc cliffs. The boardwalk hugs the cliff edge with sweeping views over the Upper Lake and Glenealo Valley, where herds of Sika deer roam. Starts with a flat stretch along the Miners' Road before ascending steeply past the ruined Miners' Village. Hiking boots and rain gear essential.
An easy 5 km linear walk (approx. 1 hr) along a forest road skirting the Upper Lake through Scots pine woodland, ending at the ruined 19th-century Miners' Village. Spot feral goats on the slopes and look across the lake to see the cave known as St Kevin's Bed. Suitable for buggies.
An easy 3 km loop (approx. 45 min) on mostly flat ground through ancient oak woodlands and along a boardwalk at the Lower Lake wetland edge. Dragonflies, lizards, and frogs are common here. The valley views are stunning, and a short detour leads to the Monastic City.
A short but rewarding 1.6 km loop (approx. 45 min) climbing steeply to the Poulanass Waterfall and its plunge pools. The path beyond the falls has partially collapsed, so the loop now follows a detour through mixed oak woodland. Listen for jays and other woodland birds.
The remarkably preserved 6th-century monastic settlement founded by St Kevin includes a 30-metre round tower, stone churches, and a large graveyard. The OPW Visitor Centre (separate admission: approx. €3–5) has exhibits and an audio-visual show. Guided tours available.
A spectacular scenic drive along the historic Military Road (R115), built after the 1798 Rebellion to connect army barracks across the mountains. Crosses the wild Sally Gap with panoramic views of the blanket bog and open moorland. Pull-offs along the route for photography.
An 8 km moderate loop (approx. 2 hr, 160m climb) climbing around Derrybawn Mountain with magnificent views over the entire Glendalough valley — both lakes, the monastic settlement, and Laragh village. Red squirrels and treecreepers often seen. Note: trail has been re-routed to bypass Poulanass waterfall due to storm damage.
Wild camping is permitted in the remote upland areas of the park for experienced campers only. Strict Leave No Trace rules apply: no fires, pack out all waste, camp away from roads and buildings. Review the full guidelines on the park website before setting out.
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