River Robe – trout fishing in south Mayo

📍 South County Mayo, Mayo

🏛️ Attraction
🅿️ Parking
Parking in Ballinrobe and near Hollymount, with small car parks close to the banks.

Last updated: 10 July 2026

Overview

The River Robe is the longest tributary feeding Lough Mask, running about 64 km west from near Ballyhaunis to a mouth roughly 4 km west of Ballinrobe, near Cushlough. Its catchment of around 320 km² is the largest of any river draining into the lake. The important thing to know before you plan around it: the Robe is a spate river. In a dry spell the upper reaches thin to a peat-stained trickle; after a couple of days of rain the whole thing lifts and quickens.

The name

The river gives Ballinrobe its name – Baile an Róba, the town of the Robe – and the Irish, Abhainn an Róba, traces back to the Old Irish rodba, meaning aggressive or fierce. That suits a river that runs hard after heavy weather. Villages like Brickens, Tootagh and Hollymount grew up along its floodplain, using the water for transport and farming.

Advertisement

Fishing the Robe

Fishing is the main reason people seek the Robe out, and it’s brown trout, taken on fly or by spinning. The season runs from 1 March to 30 September. Because it’s a spate fishery, timing matters more than tackle: the best of it comes from late June through September, with September often the pick of the year, though mid-May is the height of the trout season proper. Most fish are modest, but the Robe holds trout that top 6 lb, usually in the slower, deeper water lower down toward Lough Mask. The upper reaches run faster and give up smaller, harder-fighting fish.

One honest caveat: this is water that rewards knowing it. There are no fixed marks laid out for visitors, access is along accessible banks near Ballinrobe and Hollymount, and a blank day in low water is entirely possible. Freshwater fishing in Ireland needs a valid rod licence from Inland Fisheries Ireland, and some stretches are managed by local angling clubs – check locally before you cast.

Walking & cycling along the banks

Riverside walk along the River Robe in Ballinrobe
Courtesy Joyce Country and Western Lakes Geopark

The ground either side of the Robe is flat, and the R331 shadows the river’s winding course with plenty of places to pull in and look. Near Keebagh the water cuts through open bogland, the dark peat setting off the clear current. The riverside walk at Ballinrobe itself is the easy option: level, short, and enough to see the river without committing to a day out.

Wildlife

Kingfishers and grey herons work the shallower stretches, and the surrounding blanket bog supports mosses, insects and seasonal wildflowers – cowslips and foxgloves come up along the banks in spring. The Robe’s steady flow also helps keep Lough Mask, one of Ireland’s most productive trout lakes, in good order.

History under the water

In 1847 a Viking-type battle axe was pulled from the Robe at Ballinrobe; it’s now held by the National Museum of Ireland. For anyone who wants the fuller local story, Michael J. Reidy’s On the Banks of the Robe River follows the river through Crossboyne and its townlands.

Practical information

As a natural waterway the Robe has no opening hours or admission fee, and public access runs along much of its length – respect private land and seek permission where it’s needed. There’s parking in Ballinrobe and near Hollymount, with small car parks close to the banks.

Getting there

  • By car: The R331 links Ballinrobe to the N84, the main Galway–Castlebar road. Follow local signage from Ballinrobe for the western banks.
  • By air: Ireland West Airport Knock is about a half-hour drive from Hollymount.
  • Seasonal conditions: Levels swing with the weather – winter rain speeds the flow, summer settles it. After heavy rain the boggy sections near Keebagh want sturdy boots, so pack them if you plan to walk the banks.

What's on in Mayo

See all events in Mayo →