4.7
(6)
795
runners
41
runs
Jogging around Yr Eifl National Nature Reserve offers routes through a landscape characterized by three prominent peaks, extensive heathland, and dramatic coastal proximity. The area features varied terrain, from moorland paths to rocky ascents, providing diverse running experiences. From the summits, panoramic views extend across the Irish Sea and Cardigan Bay. This region is also home to the well-preserved Tre'r Ceiri Hillfort, adding historical interest to the natural environment.
Last updated: May 16, 2026
5.0
(1)
27
runners
6.56km
00:51
290m
290m
Jog the 4.1-mile Yr Eifl and Tre'r Ceiri Circular, a moderate route with 957 feet of gain, offering panoramic views and ancient hillforts.
6
runners
4.30km
00:36
250m
250m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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12
runners
14.6km
02:05
840m
840m
Hard run. Very good fitness required. Mostly accessible paths. Some sure footedness required.
9
runners
15.7km
01:50
460m
460m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
6
runners
3.91km
00:27
50m
50m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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Take time to visit The Maritime Museum and stop at their coffee shop whilst you're there before you carry on on your journey along The Welsh Coastal Path or just visit as part of a morw local stroll or visit to the beach.
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Look out to sea if you're are lucky you might see some dolphins
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Tre'r Ceiri is a truly spectacular hillfort dating back to the Iron Age. In English the name means 'town of the giants.' A giant of a hillfort it is too and one of the best preserved of all with stunning views across the Llŷn Peninsula. The settlement is surrounded by stone walls that are amazingly largely intact. Some of these walls are four metres high in places. Inside the fort are the remains of around 150 houses which in days gone by would have had turfed roofs. A truly amazing place to visit!
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There are fantastic views to be had from here towards the sea, to Trevor, to the sea stacks....everywhere!
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Tre'r Ceiri is a truly spectacular hillfort dating back to the Iron Age. In English the name means 'town of the giants.' A giant of a hillfort it is too and one of the best preserved of all with stunning views across the Llŷn Peninsula. The settlement is surrounded by stone walls that are amazingly largely intact. Some of these walls are four metres high in places. Inside the fort are the remains of around 150 houses which in days gone by would have had turfed roofs. A truly amazing place to visit!
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Nefyn is a beautiful little north coast seaside village with harbour, museum and a graceful sandy crescent beach. The Llyn Maritime Museum tells the story of the peninsula’s often stormy relationship with the sea.
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The three stones above Nant Gwytheryn (the Welsh language and heritage centre), perhaps representing the three peaks of Yr Eifl. From here a short detour to the centre can be made for a cake in the cafe.
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Set at the foot of fishing village, Trefor, is a lovely little bay that has clear water and a mountainous backdrop.
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There are over 40 running routes available in Yr Eifl National Nature Reserve, catering to various fitness levels. These include easy paths, moderate trails, and more challenging ascents.
Yes, Yr Eifl National Nature Reserve offers several easy running routes. For a relaxed jog, consider the Trefor Beach – Trefor Sea Stacks loop from Trefor, which is approximately 3.9 km (2.4 miles) long with minimal elevation gain, offering a pleasant coastal experience.
The terrain in Yr Eifl National Nature Reserve is quite varied. You'll find paths traversing extensive heathland, moorland sections, and progressively rockier ground closer to the summits. The routes offer a dynamic and engaging experience, from relatively smooth paths to more rugged ascents.
Yes, many of the running routes in Yr Eifl National Nature Reserve are circular. A popular option is the Yr Eifl and Tre'r Ceiri Circular, which is about 6.5 km (4.0 miles) and takes you past the historic Tre'r Ceiri Hillfort.
Generally, dogs are welcome on trails in the Yr Eifl National Nature Reserve, but it's crucial to keep them on a lead, especially due to the presence of grazing livestock and ground-nesting birds. The area is also home to unique wildlife like choughs and feral goats, so responsible pet ownership is essential.
While many routes involve elevation, some sections and easier trails can be suitable for families. For a more accessible experience, consider routes with less significant elevation gain. Always check the route difficulty and length to ensure it matches your family's fitness level.
Yr Eifl offers spectacular views. From the summits, particularly Garn Ganol, you can enjoy panoramic 360-degree vistas across the Irish Sea, the Isle of Man, and Cardigan Bay. The ancient Tre'r Ceiri Hillfort is another prominent landmark, one of Europe's best-preserved Iron Age settlements, which you can explore on routes like the Yr Eifl and Tre'r Ceiri Circular.
Parking is available at various points around the reserve. The Yr Eifl Miners' Memorial Stones car park is a common starting point. For routes like the Yr Eifl / Garn Ganol loop, you might find parking options near Llithfaen. Always check local signage for any parking fees or restrictions.
Spring and autumn often provide the most pleasant conditions for jogging in Yr Eifl, with milder temperatures and beautiful scenery. Summer can be lovely, but be prepared for potentially warmer weather. Winter runs are possible but require appropriate gear due to rapidly changing mountain weather and potentially challenging conditions.
Yes, the Nant Gwrtheyrn Welsh Language and Heritage Centre is a popular starting point for walks and features a cafe, providing a convenient amenity for visitors. You may also find other local establishments in nearby villages like Llithfaen or Trefor.
The running routes in Yr Eifl National Nature Reserve are highly rated by the komoot community, with an average score of 4.5 stars. Runners often praise the unparalleled panoramic views from the summits, the diverse terrain, and the sense of tranquility compared to more crowded outdoor destinations.
Given the varied terrain and potential for rapidly changing mountain weather, it's advisable to wear appropriate footwear with good grip and layered clothing. Bringing water, a map or GPS device, and waterproofs is recommended, especially for longer or more challenging runs.
Absolutely. Yr Eifl offers several challenging routes with significant elevation gain. For experienced runners seeking a demanding trail, the Yr Eifl Summit loop from Trefor is an excellent choice, covering about 13.7 km (8.5 miles) with substantial ascent and descent.


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