Illustration: a lock on the Grand Canal with black-and-white balance beams, a stone cottage, a humpback bridge and a narrowboat, a walker and dog on the towpath.

Canals & the Barrow Canal Ireland

Grand Canal

Ireland's classic barge canal: 135 km and 48 hand-worked locks, counting the short Naas Branch, from Dublin's docks across Kildare and the Offaly bogs to the Shannon at Shannon Harbour.

At a glance

  • 135 km of navigation
  • 48 locks
  • 18 stops
  • 7 public moorings
  • 2 private marinas
  • ≈ 7 days end to end

Days and hours are our estimate: 5 km/h and 20 minutes a lock, about six hours a day.

Plan your cruise

Start from a ready-made trip, or plan your own day by day: distances, locks and overnight moorings.

Overview

The Grand Canal took 47 years to build, reached the Shannon in 1804 and carried its last cargo barge in 1960. Today it is a slow, green ribbon from Grand Canal Dock in Dublin to Shannon Harbour in Offaly: 131 km on the main line with 43 locks, all worked by your own crew, plus the 4 km Naas Branch with five more. In the city it follows the Circular Line past Georgian bridges and restaurant barges, and passage through the city locks, as far as the 12th Lock at Lucan, has to be arranged in advance. Beyond Lucan the canal turns rural, crosses the Liffey on the Leinster Aqueduct and climbs to its summit at Robertstown and Lowtown, where the Barrow Line branches off for Athy. From there it heads west across the Bog of Allen through Edenderry, Daingean and whiskey-making Tullamore, then past early Christian Rahan, bog-oak Pollagh and the double lock at Belmont to the Shannon. Expect few boats, villages with a pub by the bridge, otters and herons, and the towpath of the Grand Canal Way beside you from Lucan to the Shannon.

Stops, in route order

18 stops from Grand Canal Dock to 36th Lock, Shannon Harbour.

Desk research, not yet checked on site

Aerial view of Grand Canal Dock, a long basin of water lined with brick apartment blocks and modern offices, with the city stretching to the hills on the horizon.

Harbour · Co. Dublin

Grand Canal Dock

The canal’s Dublin terminus: a Georgian dock basin off the Liffey, now ringed by glass offices, a theatre and a watersports shop, entered through the Ringsend sea lock.

By arrangement 1 mooring

Photo: 瑞丽江的河水 · CC BY-SA 4.0

Bridge · Co. Dublin

Ringsend Railway Bridge

The lowest bridge on the whole Grand Canal, with just 2.45 m of headroom, where the canal leaves Grand Canal Dock under the railway.

Bridge · Co. Dublin

Baggot Street Bridge

The leafy heart of the Circular Line, with Patrick Kavanagh’s statue and memorial seat and two restaurant barges moored along Mespil Road.

2 places to eat and drink
The 12th Lock seen over its wooden gates, with white-capped bollards along the chamber, the canal continuing beyond and a long old stone building on the right.

Lock · Co. Dublin

12th Lock, Lucan

The gateway between Dublin and the countryside: the last of the city locks, kept secured and opened by appointment, where westbound boats reach open canal.

By arrangement

Photo: Royalcanalrunner · CC BY-SA 4.0

The stone arch of Hazelhatch Bridge reflected in the canal, with a green-and-blue boat moored in the foreground and a covered cruiser under the far bank.

Village · Co. Dublin

Hazelhatch

A canal-side crossroads on the Dublin–Kildare border with a pub by the water, a settled boating community and a main-line station for crew changes.

Photo: Irishshagua · CC BY-SA 4.0

Sallins Bridge seen from the quay, with a blue-and-white trip barge moored in the foreground and a small cruiser tied up beyond.

Town · Co. Kildare

Sallins

Kildare’s liveliest canal stop: long visitor jetties with water and pump-out, a brewpub on the bank, barge trips to the Leinster Aqueduct and trains to Dublin.

Public 1 mooring 1 place to eat and drink

Photo: Royalcanalrunner · CC BY-SA 4.0

Naas Harbour on a grey day, with a blue-and-red narrowboat and swans by the quay, an old harbour crane and the stone canal stores on the right.

Town · Co. Kildare

Naas

Kildare’s county town at the head of the five-lock Naas Branch, with a quiet harbour beside the restored canal stores, a few minutes from the shops.

Public 1 mooring

Photo: 瑞丽江的河水 · CC BY-SA 4.0

Boats moored along the stone quay at Robertstown, with a red-and-white cruiser in the foreground and barges further along under the trees.

Village · Co. Kildare

Robertstown

The planned canal village on the summit level, 85 m above the sea, with its grand 1801 canal hotel, a village harbour and slipway, and the start of the Barrow Way.

Public 1 mooring

Photo: Eirian Evans · CC BY-SA 2.0

Cruisers and barges moored nose to tail along both banks of the canal at Lowtown, with a boatyard crane and white buildings on the left.

Junction · Co. Kildare

Lowtown

The junction where the Barrow Line leaves the main line at Lock 19, with long serviced visitor jetties, a service block and a private marina basin.

Public 2 moorings

Photo: JP · CC BY-SA 2.0

Bond Bridge near Allenwood, a broad stone arch over the canal, with a grassy towpath in front under a cloudy sky.

Village · Co. Kildare

Allenwood

A fast-growing village a short walk from the canal on the edge of the Bog of Allen, with a café-bar, a supermarket and the memory of a peat-fired power station.

1 place to eat and drink

Photo: Royalcanalrunner · CC BY-SA 4.0

Edenderry Harbour under a grey sky, with a cream narrowboat moored at the stone quay and the town’s houses, including Harbour House, along the far side.

Town · Co. Offaly

Edenderry

A market town at the end of its own short canal branch, with a harbour close to the centre, three historic bridges and an audio-guided heritage trail.

Public 1 mooring

Photo: Royalcanalrunner · CC BY-SA 4.0

A red-and-blue narrowboat cruising along the canal at Daingean towards a stone road bridge, with a black-and-white bollard on the bright green towpath.

Town · Co. Offaly

Daingean

The old county town of King’s County, where the canal first opened in 1797, now a quiet stop with a canal-side fishing platform and an August raft race.

Photo: Kenneth Gallery Smyth · CC BY-SA 2.0

A large blue-and-cream barge moored by Bury Bridge in Tullamore on a sunny day, its hull reflected in the canal beside a grassy towpath.

Town · Co. Offaly

Tullamore

Offaly’s county town and the canal’s main inland centre, with a walled 200-year-old harbour, the navigation inspector’s office and the Tullamore Dew distillery.

Public 1 mooring

Photo: 瑞丽江的河水 · CC BY-SA 4.0

Becans Bridge, a plain concrete road bridge over the canal near Rahan, with black timber barriers on the grassy towpath and a signpost pointing to Rahan.

Village · Co. Offaly

Rahan

A scattered parish west of Tullamore with one of Offaly’s earliest monastic sites, linked with St Carthage, a short walk from the canal.

Photo: JP · CC BY-SA 2.0

Plunkett Bridge carrying the road over the canal at Pollagh, beside the village church with its small bell tower, the bridge reflected in the water.

Village · Co. Offaly

Pollagh

A bog village on the canal’s longest level, known for its 1907 church with a carved bog-oak altar and windows from the Harry Clarke studios.

Photo: JP · CC BY-SA 2.0

Looking down from the 33rd Lock at Belmont over its closed wooden gates, with the canal stretching away between a towpath and an old stone house.

Lock · Co. Offaly

Belmont Lock

The 33rd Lock at Belmont, the only double lock on the Offaly stretch, under a stone bridge of about 1800 beside an old mill village.

Next opening Sat, 31 Oct at 07:27

Photo: JP · CC BY-SA 2.0

Cruisers moored in a line along a boardwalk in the canal harbour at Shannon Harbour, seen from a bridge, with a road along the far bank.

Village · Co. Offaly

Shannon Harbour

The canal’s western terminus where it meets the Shannon and the Brosna: a purpose-built trans-shipment village with a serviced harbour, a pub and a ruined canal hotel.

Public 1 mooring 1 place to eat and drink

Photo: James Emmans · CC BY-SA 2.0

Lock · Co. Offaly

36th Lock, Shannon Harbour

The last lock on the Grand Canal, where boats coming off the Shannon and the Brosna first need a canal permit and their own lock key.

Next opening Sat, 31 Oct at 07:28
Show all 18 stops Show fewer stops

Services along the way

3 stops

Pump-out, water, fuel, shore power, showers and laundry where a listing says so, in route order. Tap a stop for who runs it and when.

  1. Sallins Pump-out Drinking water
  2. Lowtown Pump-out Drinking water Shore power Showers Toilets Smart Card
  3. Shannon Harbour Showers Toilets Laundry

A stop not listed here may still have them: nobody has checked yet. Know better? Report a change

Practical rules

Mooring limits, locks, speed and hazards, in our own words with links to the sources.

Permit

Every boat on the canal needs a Waterways Ireland permit, displayed on the outside. The yearly Combined Mooring and Passage permit (CMP) costs €126, runs from 1 November to 31 October and pays for lock passages and stays of up to five days at any one public mooring. Visitors can get a free 31-day permit instead, once each calendar year (permits). There is no winter mooring.

Locks

Every lock is worked by hand with your own lock key (Waterways Ireland quotes both €50 and €25: ask the Eastern Regional Office, +353 1 868 0148). They open in daylight hours (boater information). The Ringsend sea lock, the Circular Line locks and locks 1–12 in Dublin are passed by arrangement only: e-mail dublincanals@waterwaysireland.org two working days ahead (Special Marine Notice 1/2026), and Lock 12 passes at most two boats a day. In dry spells some locks are secured and need a patroller (19 and 20 in 2026). Since 1 April 2026 a lifejacket or buoyancy aid must be worn at every lock (Marine Notice 35/2026).

Size limits

Locks are 18.5 m long and 3.9 m wide; draft 1.2 m (1 m in Dublin); air draft 2.7 m, but only 2.45 m under the Ringsend railway bridge. These are guides only.

Speed and mooring

The limit is 3.2 knots; slow down near bridges, locks and moored boats. Apart from Grand Canal Dock and Shannon Harbour, moorings are linear: jetties or the bank beside the channel.

Services

Toilets, showers and laundry at Shannon Harbour; toilets and showers at Lowtown; pay-as-you-go pump-outs at Lowtown and Sallins. The locks need no Smart Card; it only pays for shore power at Lowtown.

Before you go

Winter works run from 1 November to 17 March: check before a winter trip, and always read the marine notices.

This is a travel guide, not a navigation aid.

Conditions on the water

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Forecast, warnings and water levels

Weather and water

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Locks & bridges

48 locks on this waterway. The times below are worked out on this device. They change with the season: always read the notice.

Itineraries

Ready-made trips that start here or pass through.

All itineraries

Events

  • Usually mid-June Rally IWAI Shannon Harbour Rally (opens another website) A weekend rally at Shannon Harbour, where the Grand Canal meets the Shannon, organised by the IWAI with a barbecue and gatherings ashore. Boats entering the canal need a canal permit, at least the free visitor permit. In 2026 it ran from 19 to 21 June; the 2027 dates are not yet published.
  • Usually over the October bank holiday weekend Festival IWAI Naas & Corbally Canals Festival (opens another website) An autumn rally on the Naas branch of the Grand Canal, organised by the IWAI’s Kildare branch over the October bank holiday weekend: boats climb the five locks to Naas harbour, with walks, talks, boat games and music.

All events Tell us about an event

Marine notices

Current Waterways Ireland marine notices for this waterway. The one-line summaries are ours: read the notice itself.

Show 4 more

Source: Waterways Ireland · All marine notices on Waterways Ireland

More on the map, from OpenStreetMap

Places on the map that are not near one of our stops. Listed on OpenStreetMap, not checked by us. © OpenStreetMap contributors

Harbours & marinas from OpenStreetMap — access not checked (2)
Food & drink (164)
Water & pump-out (1)
Shops (44)
Locks & bridges (109)
Things to do (31)
Services (61)