Best lakes in the MacGillycuddy's Reeks are found within this mountain range in County Kerry, Ireland. The area features numerous glacial lakes nestled amidst dramatic landscapes. These lakes offer opportunities for recreation and scenic views. The region is known for its diverse natural features, including Ireland's deepest and highest lakes.
Last updated: May 27, 2026
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If you would like to walk around the lake, bring a good pair of shoes, socks, and rain jacket. The lookouts are beautiful, and there are a few great places for a trail snack. Don't forget to pack water. If you aren't game for a walking hike, we saw many people on their bikes, and there is a driving path that goes part way around the lake with several pull off spots, if you are in a bit of a rush.
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We really enjoyed visiting Ross Castle in Killarney. This castle is particularly impressive from the outside and the surroundings with the beautiful lake are just totally romantic. I personally didn't find the interior that spectacular, but once you've had a look around the castle you'll be rewarded with a fantastic view at the top!
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Muckross Lake is one of those places that reveals new facets with every bend on the tour around Killarney. If you are on a bike, the route takes you through dense forests, over historic bridges and along the shores of this fascinating lake. Things get particularly exciting on the Muckross Peninsula, where the calm waters of Muckross Lake separate from the larger Lough Leane. On your way you pass the Brickeen Bridge, a narrow connection that takes you first to Brickeen Island and then on to Dinis Island - a nice place for a break in the café in the historic Dinis Cottage. In addition to the quiet riverside paths and impressive views, there is also the wild element here: at the "Meeting of the Waters" the watercourses from the Upper Lake, Muckross Lake and Lough Leane meet and create a strong current - a real nature experience. It is said that the local clan leader O’Donoghue once challenged the devil at this lake, which led to the creation of Devil’s Island – a small island that is now populated by sea eagles rather than the devil. These majestic birds, introduced as part of a reintroduction project, circle above the lake, giving the landscape a wild, unspoilt feel. For nature lovers, there is more to discover here: Muckross Lake is home to the rare Blunt-nosed Irish Charr, an endangered species of fish that is only found here and in neighbouring Lough Leane. Sika deer and the last population of Irish red deer also roam the forests along the shore – if you’re lucky, you might spot one of these animals.
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This hike takes you through a breathtaking gorge, which opens into the vast, tranquil landscape of the lake through the "gate." The narrow path winds between steep rock faces, offering you repeatedly impressive views of the clear water and the surrounding hills. You can literally feel nature setting the pace here – the calm waves of the lake, the green vegetation stretching over the rocks, and the recurring feeling of vastness. The path is narrow and a bit challenging in places, but that only makes the hike all the more exciting. I particularly liked the small bridges that repeatedly cross the route – perfect for pausing to admire the scenery. Andy's tip is a good one: There are numerous photo spots along the route that you shouldn't miss. One tip: Even though the route is quite popular, you can usually find a quiet corner to take in the scenery. Early morning or late afternoon is the best time to fully enjoy the hike and escape the crowds. It's also worth exploring the route on foot or in one of the traditional horse-drawn carriages – this way you avoid the busy roads and experience the area more intensely. For me, the "Gate & Lake" route is a place of contrasts: from the narrow passage through the gate to the vast, tranquil lake landscape. It's a hike that's not only physically challenging but also offers repeated moments of peace and reflection. Perfect for connecting with the wild beauty of Ireland.
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The MacGillycuddy's Reeks are home to several unique lakes. For instance, Muckross Lake is Ireland's deepest lake, reaching 75 meters (246 ft). Lough Cummeenoughter holds the distinction of being Ireland's highest lake, situated at 707 meters (2,319 ft). The region also features glacial lakes like Lough Coomloughra, carved into U-shaped valleys.
Yes, the area around the lakes is rich in history. Ross Castle, a 15th-century castle, sits on the edge of Lough Leane and offers guided tours. Near Meeting of the Waters, you can see an old stone bridge and visit the nearby Dinis Cottage.
The lakes offer a variety of outdoor activities. You can enjoy hiking, cycling, kayaking, paddleboarding, and wild swimming. Fishing for trout and salmon is permitted in lakes like Muckross Lake and Caragh Lake. The surrounding mountains also provide opportunities for challenging ridge walks.
Absolutely. Many areas are suitable for families. The Muckross Lake Loop is a 15 km (9.3 miles) walk suitable for all ages and abilities, passing historic sites and offering wildlife spotting. Meeting of the Waters and Ross Castle are also considered family-friendly highlights.
For easy walks, consider the Muckross Lake area. The Muckross Lake Loop is a popular choice, offering a varied and accessible path. You can also find easy sections around Lough Leane, especially near Killarney town. The Hiking in the MacGillycuddy's Reeks guide includes routes like the Muckross Lake Walk.
Yes, for those seeking a challenge, the MacGillycuddy's Reeks offer demanding routes. Lough Coomloughra is part of the Coomloughra Horseshoe, a challenging 15-kilometer (10-mile) ridge walk encompassing Ireland's three peaks over 1,000 meters. You can find more challenging routes in the Hiking in the MacGillycuddy's Reeks guide, such as Carrauntoohil via Devil's Ladder Loop.
Caragh Lake is an excellent location for kayaking, with opportunities to explore parts of the River Caragh. Lough Acoose and Lough Cummeenoughter are also noted as great spots for paddleboarding and kayaking, offering stunning mountain backdrops.
Many locations offer spectacular views. The Meeting of the Waters provides picturesque views where the three Killarney lakes converge. For panoramic vistas, the View from Torc Mountain offers increasingly beautiful scenes of the lakes with every meter of ascent. Lough Acoose also provides beautiful views from its banks.
Yes, wild swimming is an option in several lakes. Caragh Lake is known for its clean waters and is suitable for wild swimming. For a more rugged experience, Lough Coomloughra is also mentioned as an excellent wild swimming location.
Visitors frequently praise the dramatic landscapes, the serene beauty of the glacial lakes, and the diverse outdoor activities available. Many enjoy the scenic walks, such as the Muckross Lake Loop, and the historical sites like Ross Castle. The opportunity to connect with nature, spot wildlife like red deer, and experience Ireland's deepest and highest lakes are also highly valued.
Yes, cycling is a popular activity. You can cycle through dense forests and over historic bridges along the shores of Muckross Lake. The Road Cycling Routes in the MacGillycuddy's Reeks guide offers several options, including loops that incorporate areas around Lough Leane and the Gap of Dunloe.
Lough Leane is the largest of the Killarney Lakes, covering an area of 4,700 acres (1902 ha). Killarney town, a vibrant tourist destination, is situated on its shores.

