4.9
(8)
2,326
runners
104
runs
Jogging around Slievenalargy offers access to diverse landscapes, primarily characterized by the woodlands of Castlewellan Forest Park and the surrounding drumlin countryside. The region provides varied terrain, from relatively flat lakeside paths to more challenging routes with elevation changes in the foothills of the Mourne Mountains. Joggers can expect paths through forests, alongside lakes, and trails that offer views of the wider Mourne Area of Outstanding Natural Beauty. Surfaces can include natural trails with variable and uneven ground.
Last updated: May 1, 2026
7
runners
7.02km
01:00
270m
270m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
175
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
79
runners
9.57km
01:07
270m
270m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
31
runners
10.1km
01:11
150m
150m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
30
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Hare's Gap is a dramatic mountain pass nestled in the heart of the Mourne Mountains. This striking pass, situated between Slieve Bearnagh and Slievenaglogh, offers hikers a blend of natural beauty and historical intrigue. From this vantage point, hikers are treated to panoramic views of the surrounding peaks and valleys. The pass itself is historically significant, having once served as a route for smuggling goods across the mountains, adding a layer of intrigue to the hike. Hare's Gap is a popular starting point for various hikes, including ascents of Slieve Bearnagh and Slieve Meelmore.
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Hare’s Gap is one of the most iconic passes in the Mourne Mountains, marked by its rugged stile and dramatic views that open up across the range. Once a historic smuggling route, it remains a natural gateway into the high Mournes, with steep paths and striking rock formations framing the way. From here, the landscape unfolds in every direction, making it a perfect spot to pause, take in the scenery, and appreciate the wild beauty of these mountains.
4
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Super nice break spot
0
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Not appreciated when bathing there
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A very beautiful castle in the forest
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Reservoir with castle and forest
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A beautiful reservoir surrounded by forest including a beautiful castle
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There are over 115 running routes available around Slievenalargy, catering to various fitness levels. These include easy, moderate, and difficult options, ensuring a suitable path for every runner.
The running trails near Slievenalargy offer diverse terrain, ranging from lush woodlands within Castlewellan Forest Park to the rolling drumlin countryside. You'll find relatively flat lakeside paths, as well as routes with significant elevation changes in the foothills of the Mourne Mountains. Surfaces can be natural, variable, and uneven, including rocks and roots, providing a true outdoor running experience.
Yes, Slievenalargy offers 5 easy running routes perfect for beginners or those seeking a relaxed jog. These trails typically feature less challenging terrain and elevation, allowing for an enjoyable and accessible experience.
For more challenging runs, the Slievenalargy area boasts 53 difficult routes, many of which venture into the mountainous terrain of the Mourne Mountains. These trails often feature significant elevation gains and rugged paths, providing an excellent workout for experienced runners. An example is the Trassey Track to Hare's Gap run — Mourne, which includes a steady climb through the landscape.
Absolutely! Many routes offer breathtaking panoramic views of the Mourne Mountains and the surrounding countryside. For instance, the View of Mourne AONB – View of Castlewellan Castle loop from Dollys Brae Car Park provides stunning vistas of the Mourne Area of Outstanding Natural Beauty and Castlewellan Castle. You can also explore trails that lead to viewpoints like Slievenaslat within Castlewellan Forest Park.
Yes, many of the running routes around Slievenalargy are circular, offering convenient starting and ending points. A popular option is the Slievenaslat Summit – View of Castlewellan Castle loop from Castlewellan, which takes you through woodlands to scenic viewpoints and returns to your starting location.
Yes, you can find running routes that feature waterfalls. The Shimna River Waterfall – Boundary Bridge loop from Shimna River is a moderate trail that includes views of the Shimna River Waterfall, offering a refreshing natural highlight during your run.
Many trails within Castlewellan Forest Park, close to Slievenalargy, are suitable for families, especially the easier, well-maintained paths. These routes often provide a safe and enjoyable environment for children and adults to jog together amidst nature.
Generally, many outdoor areas in County Down, including parts of Castlewellan Forest Park and the Mourne Mountains, are dog-friendly. However, it's always recommended to keep dogs on a lead, especially in areas with livestock or wildlife, and to check specific park regulations before you go.
The running routes around Slievenalargy are highly rated by the komoot community, with an average score of 4.86 stars from over 12 reviews. Runners often praise the diverse landscapes, from tranquil woodlands and lakeside paths to the dramatic mountain scenery, as well as the variety of routes catering to all ability levels.
Yes, several routes offer access to interesting attractions. For example, trails within Castlewellan Forest Park can lead you past the historic Castlewellan Castle, the famous Peace Maze, and the beautiful Annesley gardens and Arboretum. The broader Mourne Area of Outstanding Natural Beauty also features significant natural monuments like Hare's Gap and sections of The Mourne Wall.
Yes, parking is generally available at key access points for many trails, particularly around popular areas like Castlewellan Forest Park. For instance, the View of Mourne AONB – View of Castlewellan Castle loop starts from Dollys Brae Car Park, indicating dedicated parking facilities.
The Slievenalargy area is beautiful year-round, but spring and autumn often offer the most pleasant running conditions with mild temperatures and vibrant scenery. Summer is also popular, though trails can be busier. Winter running is possible, but be prepared for potentially wet and uneven surfaces, especially in higher elevations.


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