River Aherlow and Glen of Aherlow

📍 County Limerick & County Tipperary, Various

🏛️ Attraction

Last updated: 28 April 2026

Overview

The River Aherlow (Irish: An Eatharlach) winds through the Glen of Aherlow, a verdant valley sandwiched between the towering Galtee Mountains to the south and the wooded ridge of Slievenamuck to the north. Rising near Anglesborough in County Limerick, the river flows west, north and east, forming a five‑kilometre stretch that marks the Limerick‑Tipperary border before joining the River Suir at Kilmoyler. The glen, whose name derives from the old Irish eatharlach – “lowland between two high lands” – is dotted with the villages of Lisvarrinane, Bansha and Galbally and is centred around the Christ the King statue, erected in 1950, which crowns the entrance to the Glen of Aherlow Nature Park.

History & Background

For centuries the glen served as a vital pass linking the provinces of Limerick and Tipperary, shaping settlement patterns and transport routes. Bridges such as the historic five‑arch Ashgrove Bridge and the modern N24 crossing illustrate the river’s long‑standing role in local connectivity. Folklore records that 17th‑century historian Geoffrey Keating hid in a cave here while compiling Foras Feasa ar Éirinn. The Heritage Trail weaves together sacred and historic sites – St Pecaun’s Holy Well, a Celtic ogham stone, the 15th‑century Franciscan friary of Moor Abbey and the megalithic passage tomb known as Darby’s Bed – all sign‑posted along the walking routes.

What to See & Do

Walking & Nature

  • Glen of Aherlow Nature Park – a 50‑acre woodland with looped trails, information panels on flora and fauna, and picnic spots beside the river.
  • Christ the King Statue – the most photographed viewpoint, offering sweeping panoramas of the river winding through the valley.
  • Heritage Trail – links the historic sites mentioned above, ideal for a cultural walk.
  • Walking Trails – eight looped walks on Slievenamuck and two linear routes into the Galtees start from the Christ the King trailhead or Lisvarrinane Village. Popular loops include:
TrailLengthAscentDifficultyApprox. Time
Ballinacourty Loop8.30 km240 mModerate3 hrs
Bianconi Loop3.80 km120 mEasy1 hr 15 min
Rock an Thorabh Loop5.70 km300 mModerate2 hrs 30 min
Woodland Loop2.0 kmEasy30 min
Millennium Stone Loop2.5 kmModerate2 ½ hrs

All routes are well‑marked with coloured arrows and intersect the long‑distance Ballyhoura Way.

Fishing

The River Aherlow is a celebrated brown‑trout fishery, also supporting perch. No permit is required to fish the Aherlow itself, making it ideal for both seasoned anglers and beginners. For salmon fishing on the nearby River Suir, permits are available from the Cahir Tourist Office (+353 (0)52 41453) or the Southern Regional Fisheries Board (Tel: 052 6180055).

Horse‑Riding & Cycling

  • Hillcrest Equestrian Centre offers lessons, trekking and cross‑country rides across the glen’s open roads and forest tracks.
  • BBikes provides bicycle hire for the two parallel valley roads, perfect for a leisurely ride or a more vigorous loop.

Nearby Attractions

A short drive from the glen brings you to the historic Moor Abbey, a 15th‑century Franciscan friary set in tranquil countryside – an excellent complement to a day exploring the river and its trails.

Practical Information

  • Location: Western County Tipperary, bordering County Limerick.
  • Access: The N24 runs through the valley; the Ashgrove Bridge and modern road crossings give easy entry.
  • Facilities: Picnic tables in the nature park, restrooms at the Christ the King visitor area, and local cafés in Lisvarrinane and Bansha.
  • Contact: For fishing permits on the River Suir – Cahir Tourist Office, +353 (0)52 41453; for trail maps and GPX files – https://www.aherlow.com/heritage‑trail.

Whether seeking tranquil riverside walks, a glimpse into early Irish history, or a day of angling and outdoor sport, the River Aherlow and Glen of Aherlow deliver a quintessential Irish countryside experience.