4.3
(3)
70
runners
12
runs
Jogging around Beagh Big offers diverse landscapes across its grasslands, extensive blanket bog, and low, smooth summits. The region, straddling the border between Ireland and Northern Ireland, is characterized by varied terrain suitable for trail running. Runners can explore areas with unique flora, soft blanket bog, and numerous small lakes and streams. The highest point reaches 380 meters (1,250 ft), providing panoramic views for those seeking more strenuous running routes.
Last updated: May 1, 2026
4.3
(3)
27
runners
16.1km
01:44
140m
140m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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8
runners
6.82km
00:46
60m
60m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
runners
6.73km
00:52
160m
160m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
runners
5.30km
00:34
70m
70m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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A hive of activity, the marina at Castle Archdale is full of things to do. Why not park your bike and pedal on water on one of the hydrobikes? Kayaks, paddleboards and boats are also available to hire. Or if you're looking for a break, this is a great place to stop and take it all in.
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During WW2 Castle Archdale was a major base for flying boats and housed up to 2,500 people. Buildings such as these would have been a central location for the RAF fighters who lived here. Sometimes exhibitions are held in these courtyards to display some of the key historical notes of the use of this area during the war.
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A white beacon marks the location of Rossmore Point. There is a bench to sit on here where you can enjoy serene views over Lough Erne.
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Beautiful views over Lough Erne toward Tom's Island. Tom's Island is actually no longer an island, but once was before the lough was lowered.
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Old Castle Archdale is situated on Castle Hill within a 520 hectare coniferous and mixed broadleaved forest. The castle was built in the 1600s and was the main castle on this former estate before its successor took it's place in the 1800s, Castle Archdale.
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Take in the fabulous views of Lower Lough Erne from this point. Directly ahead you will see Crevinisaughy and Inishmakill island. These are one of the many islands found in this large lake system that is in fact widened sections of the River Erne as it flows towards the Alantic.
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Old Castle Archdale sits on a forest clifftop. It is named 'old' to distinguish it from its successor, the 18th century Castle Archdale. The castle was built by an Englishman from Suffolk who had been granted the estate in 1612 after paying 5 pounds, 6 shillings and 8 pence for the 1000 acres of land. During the Irish Rebellion of 1641 the castle was captured by Rory Maguire as part of the uprising to retake his lands that had been lost in 1607. The heir to the castle was saved by his nurse however the other children were killed. After the castle was returned to the family it was repaired and lived in until 1689. The castle saw its end during the Williamite Wars when the castle was burnt out and abandoned.
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There are 12 dedicated jogging routes around Beagh Big, offering a variety of experiences for different fitness levels. You'll find options ranging from easy paths to more challenging trails.
The Beagh Big area offers a diverse range of running terrain. You can expect to encounter remote forestry tracks, unique grassland vegetation, and extensive areas of soft blanket bog. The landscape also features numerous small lakes, streams, and low, smooth summits, providing varied surfaces and elevation changes.
Yes, Beagh Big has 2 easy jogging routes, perfect for beginners or those seeking a more relaxed run. Additionally, there are 7 moderate routes that offer a good balance of challenge and accessibility.
Absolutely. For experienced runners looking for a challenge, Beagh Big features 3 difficult routes. One such route is the Old Castle Archdale – Rossmore Point Beacon loop from Lisnarrick, which spans 16.1 km and includes varied terrain and significant elevation changes.
Yes, you can! The Blackslee Waterfall loop from Whiterocks is a moderate 6.7 km route that takes you past a beautiful waterfall, offering a scenic and refreshing running experience.
The running routes in Beagh Big are highly regarded by the komoot community, with an average rating of 4.3 out of 5 stars from 3 reviews. Over 70 runners have already explored the varied terrain using komoot, often praising the diverse landscapes and natural beauty.
Many of the routes in Beagh Big are designed as loops, offering convenient circular runs. For example, the Rossmore Point Beacon – Castle Archdale Marina loop from Lisnarrick is a popular moderate circular path, and the Rossmore Point Beacon – Castle Archdale Marina loop from White Island also provides a scenic loop through natural scenery.
Beagh Big is an Area of Special Scientific Interest (ASSI) and a Special Area of Conservation, meaning it's rich in natural beauty. You might see unique grassland flora like bulbous buttercups and yellow rattle, as well as sphagnum mosses in the blanket bog areas. The numerous lakes and streams, including Lough Sallagh, are home to rare upland beetle species, and the overall preserved environment offers a chance to observe local wildlife.
Yes, several interesting landmarks and attractions are close to the running routes. You can explore historical sites like Old Castle Archdale, the Janus Stones of Caldragh Cemetery, or the Tully Castle Ruins. For scenic views, visit Rossmore Point Beacon or enjoy the View of Lough Erne from Cliffs of Magho.
The diverse landscape of Beagh Big can be enjoyed throughout the year, but the best time often depends on your preference. Spring and summer offer vibrant flora and generally milder weather, making the grasslands and flowering plants particularly beautiful. Autumn provides stunning colors, while winter can offer a more rugged and challenging experience, especially on the blanket bog, though conditions may be more demanding.
Yes, the low, smooth summits of Slieve Beagh, with the highest point reaching 380 meters, provide excellent opportunities for panoramic views. The Monaghan high point on Slieve Beagh East Top, in particular, offers sweeping vistas across three counties, making for a rewarding experience on more strenuous runs.
Absolutely. The varied and often challenging terrain of Slieve Beagh, including remote forestry tracks, soft blanket bog, and undulating hills, makes it an ideal location for trail running. It's a great place to test your physical endurance and enjoy a natural, off-road running experience.


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