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The Slieve Bloom Mountains

A rounded plateau of blanket bog and forestry in the Midlands, cut by river glens with waterfalls and boardwalk bog walks.

Updated 19 October 2026

The Slieve Bloom Mountains

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WhereCounty Laois and County Offaly
Nearest cityPortlaoise
Best seasonApril to October
Time to allowHalf a day to a day
Getting thereTrailheads at Glenbarrow, Capard and Kinnitty in the Midlands
EntryFree

The Slieve Blooms rise out of the flat Midlands as a broad, rounded plateau of blanket bog and forestry, low enough that the highest point, Arderin, reaches only 527 metres, and quiet enough to stay empty on weekends when Wicklow is full. Streams cut steep glens into the edges of the plateau; the best known runs through Glenbarrow, where the Clamphole falls step down over rock in a wooded valley. A boardwalk at the Ridge of Capard gives an easy walk out over intact bog with a wide view across several counties. A long waymarked circuit, the Slieve Bloom Way, loops the whole range.

History

The range stretches from near Roscrea in the south-west to Rosenallis, with its highest point, Arderin, at 527 m, and looped walking trails have been laid out from six trailheads, among them Glenbarrow, Clonaslee, Cadamstown and Kinnitty (Wikipedia, Slieve Bloom Mountains).

Highlights

  • Glenbarrow - the river glen with the Clamphole falls and a wooded riverside path.
  • The Ridge of Capard - a boardwalk over open blanket bog with wide views.
  • Arderin - the high point of the range, on the Laois and Offaly boundary.
  • The mountain bike trails - a network of built tracks through the forestry.

When to go

April to October for firmer ground and for heather colour in late summer. The bog holds water all year and paths stay soft after rain. Weekdays are close to empty. Autumn is good in Glenbarrow when the broadleaves turn. There is little infrastructure, so plan food and fuel around the villages at the edge of the range.

What to expect

There is no drama here, no real peak and no big view from most of the range, so visitors expecting mountains in the usual sense find rounded hills under conifer plantation. Signage is patchy and some forest tracks end without warning. The ground is wet almost always, midges are bad in summer, and facilities amount to a few car parks.

Nearby

Kinnitty and Mountrath sit at opposite edges; Birr is a short drive northwest.

Key facts

Elevation527 m (1,729 ft)
Location53.1000° N, 7.5667° W · map

Source: Wikidata, item Q2658989, read on 18 October 2026.

What to pack for The Slieve Bloom Mountains

Chosen from what this place is for. Tap a kit for the full checklist.

  • Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
  • Padded shorts - The one thing that makes a full day in the saddle bearable. Find on Amazon
  • Layers for big temperature swings - Warm sun by day, near-freezing at night, even near the equator. Find on Amazon
  • Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon

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