Overview
Castle Lake is a 50-acre body of water set within a Coillte-managed forest just south of Bailieborough in County Cavan. The area sits within the traditional lands of east Breffni and offers a straightforward, free outdoor experience that combines gentle walking, angling, and local history. The Irish name for Bailieborough, Coill an Chollaigh, translates to “forest of the boar,” a nod to the area’s ancient woodland character. While you won’t encounter wild boar today, the forest floor still carries that deep, native feel, particularly in spring when carpets of bluebells and foxgloves bloom beneath ancient oaks and purple beech.
The Trails: PJ’s Way
The main route, officially named PJ’s Way, is part of Fáilte Ireland’s looped walking network. Blue arrows guide visitors from the lakeside car park through a firm, gravel forestry track that is largely level, with a modest 30-metre ascent. The short loop covers 3.7 km and typically takes just over an hour. For those with more time, a 3 km extension adds a second circuit that passes additional historic markers and viewpoints, bringing the total to roughly 6.5 km. The paths are well-drained and suitable for casual walkers, families, and dogs (kept on leads). Maps and trail information are available at the car park kiosk.
History & Heritage
The landscape holds visible layers of Irish history. The most prominent feature is the low stone foundations of Bailieborough Castle, built by Scottish planter William Bailie. Granted the lands of Tandragee by King James I in the early 17th century, Bailie enclosed the demesne by 1629. The castle later served as a novitiate for the Marist brothers in the 1800s, and their modest headstones remain in a small woodland cemetery nearby.
Further along the longer route stands a memorial dedicated to those who fell at Rebel Hill during the 1798 uprising, a reminder of the area’s turbulent past. Scattered archaeological features, including a fairy fort near the pump house and a rath on Rebel Hill, point to Bronze-Age settlement patterns long before the plantation era. Interpretive panels along the trail provide context for each site.
Wildlife & Seasonal Highlights
Castle Lake is a productive habitat for both birdlife and mammals. The water and surrounding wetlands regularly host mute swans, mallards, great crested grebes, cormorants, and grey herons. Keep an eye on the stone bridge where the Lear River exits the lake for dippers, and scan the shoreline for kingfishers. At dusk, bats can be seen feeding over the water, while red squirrels, pine martens, and foxes occasionally cross the forest paths. The Cavan branch of Birdwatch Ireland organises an annual Dawn Chorus walk starting at 4:30 am, offering a quiet, early-morning immersion in the woodland soundscape.
Seasonally, the area shifts noticeably. Spring brings the bluebell displays and arriving migratory birds. Summer offers longer daylight hours for the extended loop and peak conditions for coarse fishing. Autumn turns the oak and beech canopy to gold, while winter can see the lake partially freeze, creating a still, reflective atmosphere. The short loop remains accessible year-round.
Practical Information
- Access & Parking: Free parking is available in the tarmac car park on the north-west shore. The site is reached via the R191 from Bailieborough.
- Fishing: The lake is a well-stocked coarse fishery holding bream, roach, perch, pike, and eel. Designated stands line the shore, including disabled-access platforms. Bream fishing is strongest from April through October, though roach and pike are available year-round. A trolley is recommended for transporting gear along the perimeter.
- Facilities: Picnic benches overlook the water from the car park area. A toilet block is located near the main entrance. There are no refreshment facilities on site, so visitors should bring their own supplies.
- Safety & Etiquette: Paths are firm but can become wet near the stone bridge after heavy rain. Stay on marked trails to protect nesting ground and fragile archaeological features. Dogs are welcome but must be kept under control. Please take all litter home and respect the quiet character of the forest.
Nearby Attractions
- Bailieborough Castle – The original plantation-era structure and its surrounding demesne, closely linked to the forest walk.
- Annagh Lake – A larger, open-water lake a few kilometres north, popular for swimming and angling.
- Cavan Burren Park – A short drive west featuring a dolmen trail, wedge tombs, and extensive waymarked walks.
- Castle Saunderson – A historic house, museum, and walled gardens offering a deeper look into Cavan’s landed heritage.
- Ballyconnell Bridge and Canal Walk – A scenic, linear route following the Shannon-Erne Waterway in the north of the county.