4.8
(33)
102
hikers
9
hikes
Hikes around Grillagh explore the landscape of County Londonderry, situated on the edge of the Sperrin Mountains. The region is characterized by undulating hills, river valleys, and ancient woodlands. Routes range from ascents of peaks like Carntogher Mountain to gentler paths through the Drumnaph Nature Reserve, offering varied terrain for hikers.
Last updated: April 27, 2026
4.4
(9)
20
hikers
9.82km
02:51
260m
260m
Embark on the Carntogher Way, a moderate hike spanning 6.1 miles (9.8 km) with an elevation gain of 868 feet (265 metres), typically completed in about 2 hours and 51β¦
5.0
(2)
18
hikers
10.0km
02:48
200m
200m
Embark on a moderate hike to Priest's Chair via Glenshane Forest, a 6.2-mile (10.0 km) route that guides you through diverse landscapes. You will gain 651 feet (199 metres) inβ¦

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5.0
(4)
19
hikers
9.11km
02:29
140m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(4)
16
hikers
6.88km
01:51
90m
90m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(9)
14
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Popular around Grillagh
The climb up Carntogher is a bit of a leg burner, but the views at the top make it all worthwhile. From the peak, you'll be afforded views across Lough Foyle to Errigal and Muckish in Donegal, Sawel and the high Sperrins, and south-east to The Mournes and Slieve Gullion.
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If you walk 100m slightly off the path south at this waypoint, you'll reach the beautiful little Altkeeran Waterfall. The waterfall is situated nearby to the spring Source Of The Grillagh and the peak Carntogher.
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Glenshane Forest is a beautiful coniferous woodland located along the Glenshane Pass on the main road between Belfast and Londonderry. The forest features a large area of heather moorland and a beautiful babbling brook that runs right through it, the River Roe. Gorgeous location for a stroll with a fascinating touch of history too if you're heading to Priest's Chair.
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The Priest's Chair, also known as the Glenshane Mass Rock is located just north of Bohilbreaga peak near Glenshane Forest and Eagle Rock. The rock got its name from an incident during The Penal Times. A young boy, acting as a lookout, deceived the searching soldiers, also known as The Red Coats, by pointing them in a different direction, protecting the priest and the mass rock.
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Yes, many of the best routes are loops. For a moderate circular walk through woodland, the Glenshane Forest β Glenshane Pass loop from Lisnamuck is a great 9 km option. If you're looking for an easier loop, the trails within Drumnaph Nature Reserve are perfect, offering shorter walks through varied habitats.
Drumnaph Nature Reserve is ideal for families. It offers several easy, well-maintained trails through ancient woodland and meadows. The SlΓ na SΓ interactive fairy trail on the Loch Bran Trail is particularly popular with children. The Drumnaph Forest β Drumnph Forest loop from Tirkane is a great choice, covering about 4.6 km on gentle paths.
Dogs are generally welcome on the trails around Grillagh, especially in open mountain areas and forests like Glenshane. However, when walking through nature reserves like Drumnaph or areas with livestock, it's essential to keep your dog on a lead to protect wildlife and farm animals. Always check local signage for specific restrictions.
Yes, the Altkeeran Waterfall is a beautiful hidden gem in the region. You can visit it by taking the Carntogher Way via Altkeeran Waterfall β Sperrins trail. This route combines the waterfall visit with a rewarding climb up Carntogher Mountain.
Drumnaph Nature Reserve is a hotspot for wildlife. Its diverse habitats of ancient woodland, wetlands, and wildflower meadows support rare butterflies, dragonflies, and otters along the river. The wider Sperrin Mountains area is also excellent for birdwatching, with chances to spot birds of prey.
Absolutely. The Grillagh area has several options for beginners. The Glenshane Forest loop from Lisnamuck is a pleasant 6.9 km walk on well-defined forest paths with minimal elevation. The various trails within Drumnaph Nature Reserve are also flat and easy to follow.
The mountain trails, particularly on Carntogher Mountain, involve ascents on open, undulating hills. The terrain can be rugged and includes some boggy sections, especially after rain, so waterproof hiking boots are strongly recommended. The paths are generally well-signposted but offer a moderate challenge.
Most of the main trailheads have dedicated parking areas. For hikes on Carntogher Mountain, there is a car park at the start of the Carntogher Way. Similarly, both Drumnaph Nature Reserve and Glenshane Forest have their own car parks for visitors.
While there isn't one continuous trail along the entire length of the Grillagh River, several routes incorporate sections of it. The trails in Drumnaph Nature Reserve run adjacent to the river, offering peaceful riverside scenery. The river itself originates on Carntogher Mountain, so you'll cross its upper reaches on mountain hikes.
The area is highly regarded by the komoot community, with an average rating of 4.8 stars. Hikers often praise the mix of scenery, from the panoramic views in the Sperrin Mountains to the tranquil ancient woodlands. The well-marked paths and historical points of interest are also frequently mentioned as highlights.
Yes, the region is rich in history. The hike up Carntogher Mountain features an Emigrants' Cairn and sites from local mythology like Shane's Leaps. Within Drumnaph Nature Reserve, you can find archaeological sites including an ancient rath (fort) and a stone circle.
The Priest's Chair via Glenshane Forest β Sperrins is considered a moderate hike. The 10 km route involves a steady climb through the forest to the unique rock formation. While not technically difficult, it requires a reasonable level of fitness to complete comfortably.


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