4.7
(211)
1,713
hikers
12
hikes
Hiking around Yr Eifl National Nature Reserve is characterized by its three prominent summits, coastal paths, and historical Iron Age hillforts. The landscape features dramatic elevation changes, with peaks reaching over 500 meters, offering expansive views across the Llŷn Peninsula and Cardigan Bay. This area, designated as a National Nature Reserve and Site of Special Scientific Interest, also includes former granite quarries and storm beaches. The terrain ranges from challenging mountain ascents to more accessible coastal and valley routes.
Last updated: July 9, 2026
5.0
(1)
9
hikers
9.41km
03:25
550m
540m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
13
hikers
12.2km
04:08
600m
600m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.9
(19)
179
hikers
10.2km
02:43
100m
100m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.8
(8)
30
hikers
6.61km
02:07
280m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
17
hikers
15.1km
04:30
450m
460m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Beautiful tiny village church, open 24h. Small parking nearby, good as a starting point for a coastal walk towards old quarry remnants.
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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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small parking bay available
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The pub is a little bit out of the way. But, it is well worth the effort. The Tŷ Coch Inn is nestled in the village of Porthdinllaen near Morfa Nefyn, Gwynedd on the north coast of the LLŷn Peninsula. With views across the Irish Sea towards Yr Eifl and a sandy beach on its doorstep, what better way to while away the hours? Access to the pub is via bicycle and foot as vehicular access is for residents only.
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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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Garn Boduan is an Iron Age hillfort and hill near Nefyn, on the Llŷn Peninsula in Wales. In a survey in the 1950s the traces of over 170 round houses were identified on this site, and around 100 round houses are still visible on the ground. Between 100 and 400 people may have lived in this fort. The lower stone rampart is the original defence built in the Iron Age. At a later date, perhaps in the 6th/7th century AD, a smaller rampart was built on the eastern side. It is also a UK listed Marilyn.
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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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There are 15 curated hiking routes in Yr Eifl National Nature Reserve that are easily accessible from bus stations. These routes offer a range of experiences, from easier strolls to more challenging ascents.
Yes, approximately 6 of the available routes are rated as easy, making them suitable for a more relaxed outing. These trails often feature less elevation gain and shorter distances, perfect for a gentle exploration of the area.
The trails offer breathtaking panoramic views. From the higher points, on clear days, you can see as far as the Isle of Man, the Wicklow Mountains in Ireland, the Lake District, and the entire sweep of Cardigan Bay. Closer views encompass the majestic Eryri (Snowdonia) mountains, Caernarfon Bay, and Tremadoc Bay. For example, the View of Llŷn Peninsula Coast – Plateau with Views over Trefor loop from Trefor provides excellent coastal vistas.
Absolutely. The region is rich in history. A significant attraction is the Tre'r Ceiri Hillfort, an exceptionally well-preserved Iron Age settlement with intact stone walls and hut circles. You can explore this on the Yr Eifl Summit – Tre'r Ceiri Hillfort loop from Trefor. The area also features evidence of former granite quarries, and the old quarrymen's village of Nant Gwrtheyrn, now a Welsh Language Centre, which is part of the Nant Gwrtheyrn Quarry Ruins – Nant Gwrtheyrn Café loop from Trefor.
Yes, many of the routes are designed as circular walks, allowing you to return to your starting point without retracing your steps. For instance, the View of Llŷn Peninsula Coast – Plateau with Views over Trefor loop from Trefor is a great example of a circular route accessible by bus.
The reserve offers rewarding hikes year-round. Spring and autumn provide pleasant temperatures and vibrant scenery, while summer is ideal for clear panoramic views. Winter walks can be stunning, but require appropriate gear for potentially colder and wetter conditions. Always check local bus schedules, as services may vary seasonally.
Yes, with 6 easy routes available, there are options suitable for families. These trails typically have manageable distances and elevation, allowing for an enjoyable outing with children. Consider routes that offer interesting features like coastal views or historical sites to keep younger hikers engaged.
The area is highly rated by the komoot community, with an average score of 4.7 out of 5 stars from 238 ratings. Reviewers often praise the stunning panoramic views, the historical significance of sites like Tre'r Ceiri, and the diverse landscapes ranging from coastal paths to mountain summits.
Yes, the reserve extends to the coastline, offering beautiful coastal walks. Porth Pistyll is a striking storm-beach composed primarily of granite pebbles where the hills dramatically meet the sea. The village of Trefor also offers picturesque views from its pier. The Porthdinllaen Bay – Porthdinllaen loop from Nefyn is another excellent coastal option.
Yr Eifl National Nature Reserve is a Site of Special Scientific Interest (SSSI) known for its ecological importance. You might spot choughs, a priority species for conservation, breeding on rock faces. A herd of feral goats roams the slopes, and the coastline is a crucial nesting site for seabirds such as razorbills, guillemots, and kittiwakes.
The dramatic landscape of Yr Eifl itself is a significant geological feature, defined by its three prominent summits: Garn Fôr, Garn Ganol, and Tre'r Ceiri. The area also showcases its industrial past with evidence of former granite quarries, some of which provided granite for curling stones. Porth Pistyll, a storm-beach primarily composed of granite pebbles, is another notable geological site.
Yes, the Yr Eifl Summit – Tre'r Ceiri Hillfort loop from Trefor specifically takes you to the exceptionally well-preserved Tre'r Ceiri Hillfort. Another route, the Nefyn Beach – Garn Boduan Iron Age Hillfort loop from Nefyn, includes the Garn Boduan Iron Age Hillfort.


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