Mountain peaks around Botwnnog offer a diverse landscape within the Llŷn Peninsula in Gwynedd, Wales. This region features notable hills and Marilyns, providing opportunities for views and hiking. The area is characterized by its natural beauty and historical significance, including ancient hillforts. Visitors can explore a variety of terrain, from coastal walks to elevated summits.
Last updated: May 18, 2026
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It's a great summit to see both the south and north coast of Llyn
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Mynydd Rhiw is a wonderfully scenic hike. It's not overly long or strenuous if you set off from the Penmynydd panorama carpark. Walking up through the purple heather lined public footpath with the coast of the peninsula either side of you makes for a picturesque stroll then reaching the summit unlocks views far and wide.
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From the magical summit of Mynydd Mawr, you can see right across the Llŷn Peninsula and out to sea. Bardsey Island, Snowdonia, Anglesey and even the Irish coast – it's all visible. This hill is only 525-feet (160 m) high but it's location makes it tower above the surrounding land and sea, giving it the impression of being much higher.
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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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From the magical summit of Mynydd Mawr, you can see right across the Llŷn Peninsula and out to sea. Bardsey Island, Snowdonia, Anglesey and even the Irish coast – it's all visible. This hill is only 525-feet (160 m) high but it's location makes it tower above the surrounding land and sea, giving it the impression of being much higher.
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Watch out for overgrown bracken and fern on public footpath but apart from that great hike.
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Garn Boduan is an Iron Age hillfort and hill near Nefyn on the Llŷn Peninsula. In a fascinating 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 high up here on the hill. The lower stone rampart is the original defence built in the Iron Age. Fine views can be had over the surrounding Llŷn peninsula and nearby Nefyn from here. it is also a UK listed Marilyn.
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Mynydd Anelog is only 191 metres high but high enough to be listed as a UK Marilyn. It might be small but there are fine views to be had looking down south towards Mynydd Mawr and out over to Bardsey Island. You can even see Mynydd Enlli on Bardsey.
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The mountain peaks in the Llŷn Peninsula offer extensive panoramic views. From summits like View of Bardsey Island from Mynydd Mawr, you can see across the entire Llŷn Peninsula, out to Bardsey Island, Snowdonia, Anglesey, and even the Irish coast on a clear day. Other peaks like Carn Fadryn and Mynydd Anelog also provide excellent vistas over the surrounding landscape and coastline.
Yes, the region is rich in history. Garn Boduan Iron Age Hillfort is a significant historical site featuring traces of over 170 Iron Age round houses. Similarly, Carn Fadryn is home to a five-hectare Iron Age hillfort at its summit. The area around Mynydd Rhiw Summit is also known for its numerous archaeological sites.
For easier walks, consider the various loop routes around Carn Fadryn. Some of these routes are easily accessible and suitable for all skill levels, typically involving around 270 meters of elevation gain and taking about two hours. You can find more details on easy hiking routes in the area by visiting the Hiking around Botwnnog guide.
Beyond hiking, the area around Botwnnog offers a variety of outdoor activities. You can explore numerous cycling routes, ranging from moderate to difficult, as detailed in the Cycling around Botwnnog guide. There are also several running trails, including moderate and difficult options, which you can find in the Running Trails around Botwnnog guide.
While popular peaks offer stunning views, the Llŷn Peninsula has many smaller, tranquil spots. Mynydd Rhiw Summit, for instance, is known for its peaceful atmosphere and rich archaeological sites, offering a pleasant hiking experience away from the busiest trails. Its designation as a UK Marilyn also highlights its distinct topography and views.
A 'Marilyn' is a hill or mountain in the UK, Ireland, or surrounding islands with a relative height (prominence) of at least 150 meters, regardless of its absolute height. Several peaks around Botwnnog, including Carn Fadryn, Mynydd Rhiw Summit, and Mynydd Anelog, are designated as Marilyns. This status often indicates that they offer more expansive views and distinct topography due to their significant drop from surrounding terrain.
Yes, there are several circular walking routes available. For example, you can find various loop walks around Carn Fadryn, catering to different fitness levels. The Hiking around Botwnnog guide lists routes such as the 'Carn Fadryn loop near Botwnnog — Llŷn' and 'Carn Fadryn loop from Garnfadryn', which are great options for exploring the area.
The Llŷn Peninsula is beautiful year-round, but for hiking and enjoying the views, spring and autumn often offer pleasant temperatures and fewer crowds. Summer can be popular, especially along the coast, but also provides the longest daylight hours. Always check the local weather forecast before heading out, as conditions can change rapidly in mountainous coastal areas.
While many routes are accessible, some trails offer more challenge. For instance, the 'View of Gelliwig 5K Route – View of Porth Neigwl from Rhiw loop from Botwnnog' is listed as a difficult running trail, indicating more strenuous terrain. When exploring, always check the difficulty ratings of specific routes. The Hiking around Botwnnog guide provides details on various routes, including those with moderate difficulty.
The mountain peaks around Botwnnog are unique due to their combination of stunning coastal and inland panoramic views, significant Iron Age historical sites, and their status as 'Marilyns' despite often being of moderate elevation. This blend of natural beauty, ancient history, and accessible hiking opportunities within the picturesque Llŷn Peninsula creates a distinctive outdoor experience.
Visitors frequently praise the 'super good' and extensive views across the Llŷn Peninsula and beyond. The historical significance of sites like the Iron Age hillforts on Garn Boduan Iron Age Hillfort and Carn Fadryn is also a major draw. Many appreciate the accessible and enjoyable hiking experiences that allow them to explore the natural beauty and tranquility of the region.


See even more amazing summits around Botwnnog with these guides: