River Maine – Castlemaine's salmon river

📍 Castlemaine, Kerry

🏛️ Attraction
🅿️ Parking
Free village car park beside the N70 bridge with a handful of bays; more pay-and-display spaces a short walk away.

Last updated: 10 July 2026

Overview

The Maine gave Castlemaine both its name and its reason to exist. In 1215 the sons of Maurice Fitzgerald built a castle straight onto a stone bridge over the river, Caisleán na Mainge, the castle of the River Maine, to hold the crossing into Munster. The stone is long gone, but the bridge site still anchors the village. The river itself is 42.6km long, rising at Tobermaing and running west through Castleisland and Currans before emptying into Castlemaine Harbour. Its name may come from the Old Irish mang, a fawn.

This is not a fast mountain river. The Maine is defined by gentle meanders and wide floodplains, and on a clear day the valley opens toward Baurtregaum, the highest peak in the Slieve Mish range. For visitors that means a slow-paced corridor for wildlife, a quiet spot for a walk, and a river anglers rate for its wild, unmanaged stock.

History and heritage

The Maine runs deep in the old stories. In the Lebor Gabála Érenn it is named as one of three rivers that “burst forth” during the reign of Fíachu Labrainne. In later centuries it marked the traditional division of the Kingdom of Desmond, with the MacCarthys to the south and the Earl of Desmond to the north.

The crossing the Fitzgeralds fortified in 1215 is still the heart of the village, and the present four-arch hump-backed Maine Bridge, dated 1814, is a protected structure of limestone ashlar with V-shaped cutwaters. The N70 from Tralee to the Dingle Peninsula follows the river’s valley and crosses it here.

Advertisement

Wildlife and conservation

The Maine and its estuary form part of the Castlemaine Harbour Special Area of Conservation, a mosaic of coastal and freshwater habitats. Inland, the river’s clean, oxygen-rich water holds Atlantic salmon, sea trout and brook lamprey; the sheltered harbour draws wintering waterfowl, and the surrounding floodplains are a stronghold for the rare natterjack toad. Walk quietly and keep your distance from feeding and nesting birds, especially through autumn and winter when the migratory flocks gather.

One caveat worth flagging: the river is not pristine. In 2014 it was reported polluted with ammonia, a reminder that a wild river is not automatically a clean one.

Angling on the Maine

An angler fly fishing on a river
Courtesy Celtic Routes

The Maine is a wild salmon and sea-trout river, and that is exactly its appeal: little intensive management, much of the fishing on remote, largely untouched stretches. Access is limited in places, so expect to walk. Permits are issued locally by Tim Landers of Landers Outdoor World (Mile Height, Killarney Road, Tralee), reachable on 066 712 6644 or at landers.ie. Seasons and licence rules change, so confirm current salmon and sea-trout dates with Inland Fisheries Ireland before you travel rather than turning up on spec.

Walking and scenic routes

A short walk along the Castlemaine riverbank runs past the site of the old bridge-castle with clear sightlines to where it stood. The route is largely level and family-friendly, though some sections near the older bridge approaches are uneven stone. The N70 and R561 meet at Castlemaine, making it a natural start for scenic drives that follow the river’s lower reaches before turning south into Dingle. Photographers do best in the soft light of early morning or late afternoon, when the water mirrors the farmland and the Atlantic horizon.

Practical information

Access to the river is free, with no charge for walking the banks or the harbour area. A small village car park sits beside the N70 bridge with a handful of free bays, and more pay-and-display spaces are a short walk away. The lower sections near the estuary are tidal, so check tide times before heading downstream; high water floods the lower banks and mudflats, which are important feeding grounds for waders, so keep to the paths.

Getting there

  • By car: From Kerry Airport, follow the R561 west to the Castlemaine junction with the N70. From Tralee, take the N70 south for about 15 km.
  • By bus: Bus Éireann services between Tralee and Dingle stop in Castlemaine. Check current timetables before travelling.
  • Accommodation: The village and surrounding area have a mix of B&Bs and self-catering cottages, with more choice in the nearby villages.

Come in late autumn if you can: the fishing pressure has eased, the light is at its clearest, and the estuary below the village fills with wintering birds.

What's on in Kerry

See all events in Kerry →