Best mountain peaks around Trealaw are found within the Rhondda Valley, a region characterized by its rolling hills and mountainous landscape. The area offers a rich natural environment for outdoor activities, with numerous hills and summits providing opportunities for exploration. While Trealaw itself is nestled in the valley, the surrounding Rhondda Cynon Taf county borough features several notable peaks. These locations offer diverse views and a connection to the local landscape.
Last updated: May 2, 2026
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We walked miles. Up to the waterfall on Gillies trail, followed the path up onto the rocky and then to the trig point on Twyn Brynbychan, above the cynnon valleys. Enjoyed a breather on top, before trekking around the back forestry where you can see Aberfan and Merthyr Vale and headed over to the bronze age sight before descending down to Cwmaman and back to the car.
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Mynydd y Glyn is a mountain in South Wales, between the towns of Pontypridd and Tonyrefail. It has a height above sea level of 377 metres. It is the mountain which was used in The Englishman who went up a Hill and came down a Mountain in which Hugh Grant and Ian McNeice star as English cartographers. In the film the mountain is known as 'Ffynnon Garw'. It is a UK listed Marilyn.
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Cefn Eglwysilan is a hill in South Wales, the twin 1,253 feet (382 m) summits of which lie just over one mile (2 km) east of Pontypridd in Rhondda Cynon Taf county borough. Its eastern side lies within the community of Aber Valley in Caerphilly county borough. Like neighbouring Mynydd Eglwysilan, the hill is named after the hamlet of Eglwysilan, the church here being dedicated to an obscure saint Ilan. A wireless transmission station is sited on the more northerly of the two summits (at OS grid ref ST 099911). The southerly one is crowned by a trig point. It is a UK listed Marilyn.
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Werfa is the highest point in Bridgend and is located just off the A4107 a few miles east of Cymmer.
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What a views, nice to stop to catch breath and enjoy the scenery
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The Bwlch, no 99 of the top 💯 climbs, 3.6 miles of ever increasing beauty
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Great climb, beautiful view at the top. Always the ice cream van at the top for an ice cream as a reward.
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While Trealaw itself is nestled in the Rhondda Valley, the surrounding Rhondda Cynon Taf county borough features several impressive peaks. Notable ones include Cefn Eglwysilan Trig Point, known for its twin summits and views east of Pontypridd, and Mynydd y Glyn Summit, famous as the filming location for 'The Englishman who went up a Hill and came down a Mountain'.
Yes, Werfa (Mynydd Llangeinwyr) is the highest point in Bridgend, reaching 568 meters. It is recognized as a Welsh Dewey and Dodd summit, offering a significant elevation for those seeking a challenge.
The peaks around Trealaw offer diverse panoramic views. From Cefn Eglwysilan Trig Point, you can see east towards Pontypridd. Twyn Brynbychan Trig Point provides views above the Cynon valleys, and from its forestry area, you can even see Aberfan and Merthyr Vale. Mynydd Aberdar Summit, though not a komoot highlight, is known for fine views of both the Merthyr Tydfil and Aberdare valleys.
Yes, the area offers several easy hiking options. For example, you can explore routes like the Clydach Lakes loop or various easy hikes starting from Trehafod and Tonypandy. You can find more details and routes in the Easy hikes around Trealaw guide.
For mountain biking enthusiasts, there are several challenging routes. Options include the Aberfan Memorial Cairn – Barry Sidings Trail loop from Porth, or the extensive View of Treherbert Basin – Gravel Road Junction in Forest loop from Ystrad Rhondda. Discover more routes in the MTB Trails around Trealaw guide.
Yes, the region provides excellent gravel biking. Challenging routes like the Rhigos Mountain Fire Roads – View of Treherbert Basin loop from Ton Pentre, or the Winding Path and Archway – Gravel Road Through Wind Farm loop from Dinas Rhondda are available. Explore these and more in the Gravel biking around Trealaw guide.
Yes, the mountainside above Trealaw is home to the Trealaw Cross. This large white stone cross, constructed in 2005, serves as a resting place for ashes and is a visible landmark across the Rhondda Fawr valley. Reaching it involves a scramble, but it offers a poignant connection to the local landscape and history.
Mynydd y Glyn Summit holds a unique place in cinematic history. It was the primary filming location for the movie 'The Englishman who went up a Hill and came down a Mountain,' where it was fictionalized as 'Ffynnon Garw'.
When visiting Twyn Brynbychan Trig Point, you can explore the surrounding forestry and a nearby bronze age site, adding a historical dimension to your outdoor adventure.
A 'trig point' (triangulation station) is a concrete pillar used in surveying. Several peaks around Trealaw, such as Cefn Eglwysilan Trig Point and Twyn Brynbychan Trig Point, feature these markers, indicating their use in mapping the landscape. They often signify a summit and offer clear views.
A 'Marilyn' is a hill or mountain in the British Isles with a relative height (prominence) of at least 150 meters. Cefn Eglwysilan Trig Point and Mynydd y Glyn Summit are both UK listed Marilyns. 'Dewey and Dodd summits' refer to specific lists of hills and mountains in Wales, often sought out by peak baggers. Werfa (Mynydd Llangeinwyr) and Twyn Crugyrafan (Graig Fawr) Summit are examples of Welsh Dewey and Dodd summits.
The Rhondda Valley and its surrounding peaks offer beautiful scenery year-round. Spring and autumn provide pleasant temperatures and vibrant colors, while summer is ideal for longer days and clearer views. Winter hikes can be rewarding, but require appropriate gear for potentially colder and wetter conditions.


See even more amazing summits around Trealaw with these guides: