4.7
(43)
142
hikers
03:27
10.0km
280m
Hiking
Hike the moderate 6.2-mile Letterkeen Loop in Wild Nephin National Park, gaining 906 feet with mountain vistas and varied terrain.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Parking
Get Directions
1.10 km
Highlight • Bridge
Translated by Google •
Tip by
4.28 km
Highlight • Mountain Hut
Tip by
6.09 km
Highlight • Summit
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Tip by
6.39 km
Highlight • Viewpoint
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Tip by
6.81 km
Highlight (Segment) • Trail
Tip by
10.0 km
End point
Parking
Way Types & Surfaces
Way Types
6.99 km
2.91 km
< 100 m
Surfaces
6.78 km
3.18 km
< 100 m
< 100 m
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Elevation
Highest point (280 m)
Lowest point (30 m)
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Weather
Powered by Foreca
Thursday 7 May
11°C
5°C
23 %
Additional weather tips
Max wind speed: 18.0 km/h
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This route was planned by komoot.
The Letterkeen Loop officially starts and finishes at the Brogan Carroll Bothy car park. This is also the primary parking area for the trail.
While dogs are generally welcome in Wild Nephin National Park, it's always best to keep them on a leash, especially given the presence of wildlife and livestock in the area. Please ensure you clean up after your dog to help preserve the natural environment.
The Letterkeen Loop can be hiked year-round, but the best time is typically during the drier months from late spring to early autumn (May to September). Be prepared for potentially wet and boggy conditions at any time of year, especially after rain. Always check the weather forecast before you go.
No, there are no permits required or entrance fees to hike the Letterkeen Loop or to access Wild Nephin National Park. It is freely accessible to the public.
The terrain on the Letterkeen Loop is varied and can be challenging. You'll encounter riverbanks, footbridges, forestry roads, bogland, open mountain slopes, and narrow paths. There are steep ascents and descents, and some sections can be very wet and rough underfoot. It's generally considered a moderate to strenuous hike, requiring a good level of fitness.
The Letterkeen Loop is approximately 10 kilometers (6.2 miles) long. Most hikers complete it in about 3 hours 30 minutes to 4 hours, depending on pace and stops.
Along the Letterkeen Loop, you'll discover several interesting spots. Keep an eye out for the Maumaratta Stream Triangular Metal Bridge, the Mullach na Buaile Hut, and a Rocky Outcrop at the Summit offering expansive views. You'll also be treated to a stunning View Across Wild Nephin National Park and Rocky Steps with View of Wild Nephin National Park.
Given the varied and often wet terrain, waterproof hiking boots are essential. Gaiters are also highly recommended, especially after rain. Layers of clothing, waterproof outerwear, navigation tools, sufficient water, and snacks are also advisable for this challenging route.
Yes, the Letterkeen Loop incorporates sections of other routes. You'll find it overlaps with parts of the historic Bangor Trail, as well as the Lough Aroher Loop and Botky Teep trails.
Yes, the Brogan Carroll Bothy car park, which serves as the trailhead, offers amenities such as picnic benches and an open bothy, providing a sheltered spot for a break.
Due to its strenuous sections, varied terrain, and potential for wet conditions, the Letterkeen Loop is generally not recommended for beginners or families with young children. It requires a good level of fitness and appropriate gear.
As the trail is located within a dynamic natural environment, it's always a good idea to check for the latest updates. You can contact Wild Nephin National Park directly for current conditions, potential disruptions (like those from forest fires), or any safety advisories.
Amazing well marked loop with fantastic scenery all the way. Expect everything, mixed terrain boggy and wet ground and fast changing weather.
We ran the loop in dry conditions and with the risk of forest fires, but there were still several muddy sections. This could be challenging in the rain. We also realized during the loop that it's better to run the other way round, as the trail markings would be more consistent that way.
A very nice round! Surefootedness required. Very wet ground in places!