4.8
(4)
152
riders
11
rides
Gravel biking around Cilycwm offers diverse landscapes, transitioning from the wide Towy River valley to the undulating terrain of Mynydd Mallaen upland heath. The region features ancient oak woodlands, extensive conifer plantations, and the significant Llyn Brianne Reservoir. These varied environments provide numerous forest tracks and remote routes suitable for no traffic gravel bike trails. The area's geography includes both gentle undulations and challenging climbs, catering to different skill levels.
Last updated: July 7, 2026
4.0
(1)
38
riders
50.4km
04:05
1,120m
1,110m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
29
riders
60.4km
04:38
1,280m
1,280m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5
riders
28.6km
02:08
640m
640m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
19.4km
01:21
310m
310m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Start of the Red mountain bike track which in May 2025 is closed
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Cwm R MTB trail is completely blocked at top end due to hundreds of wind fallen trees this winter. Please consider before as you can not navigate loop.
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A short climb up from the road brings you to the Dam and carpark, there is no access over the Dam itself. But you do get a good view over the spillway and valley below.
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Built in 1913 the Rhandirmwyn Bridge links the two sides of the Towy valley by this rivetted girder road bridge. On the southern side you'll find the Towy Bridge Inn, a lovely riverside pub.
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THE TALE OF THE WELSH “ROBIN HOOD” Known as Twm Siôn Cati Twm Siôn Cati is a historically known figure in Welsh folklore. A tale recounted by Meyrick recalls how Twm was asked by a poor man to steal a pitcher for him. They went together to a merchant where Twm started belittling the man's wares. Having told his friend secretly to take the pitcher of his choice, Twm distracted the merchant by telling him there was a hole in one of the pitchers, which the man denied. Twm desired him to put his hand in the pitcher to test it and the man still denied there was a hole. Twm then asked him how, if there was no hole, could he have put his hand inside? By this time his friend had disappeared with his pitcher, undetected. A tale from Prichard's book involves an occasion when Twm is staying in an inn overnight and realises other people are planning to rob him the following day after he sets off. He has a large sum of money with him. The following morning he behaves as though his money is in the pack-saddle of his horse. When the highwayman catches up, Twm drops the saddle in the middle of a pool. The highwayman wades into the pool to fetch it, Twm takes the opportunity to make off with the highwayman's horse. A complication arises because the horse responds to the voice of the highwayman crying "Stop!" Luckily Twm, in terror, happens to shout a word which makes the horse gallop on again, and he is conveyed to safety. Another tale recounts how Twm waylaid a rich squire, who was accompanied by his daughter, Twm was so smitten with her that he returned her jewellery to her and attempted to woo her, against her father's opposition and, initially, her own. One full moon shortly after the robbery, he crept to her window, roused her from sleep, caught her hand at the window and kissed it, refusing to let her go until she promised to marry him. She wouldn't promise so Twm drew his dagger, drew blood on her wrist and threatened to sever her hand unless she assented to marriage forthwith. She agreed to marry him and she kept her hand. Their marriage followed soon after, despite her father's views and the directness of Twm's courtship methods. The girl was supposedly the widow of the sheriff of Carmarthen. Through this marriage Twm is supposed to have gained respectability, eventually becoming a justice of the peace, sitting in judgement on others, a position he held until his death aged 79.
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Perfect fire trail gravel road, take in the views as you head down to the road that hugs the edge of the reservoir
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maybe ok on a mountain bike, and maybe even ok coming down on a gravel bike, but going up with loaded bikepacking bags we were pushing all the way!
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This attractive RSPB site has a circular footpath adjacent to a river with beautiful rock cascades and old mossy trees. It is also home to the Twm Sion Cati's cave. All worth a look off of the bike.
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Our guide features 11 dedicated no-traffic gravel bike trails around Cilycwm. These routes offer a range of experiences, from moderate loops to more challenging, longer rides through the region's diverse landscapes.
The terrain around Cilycwm is incredibly varied. You'll encounter ancient oak woodlands, extensive conifer plantations with numerous forest tracks, and the open expanses of Mynydd Mallaen. Many routes utilize wide, easy gravel roads, particularly around the Llyn Brianne Reservoir, but some trails can be steep, offering significant climbs.
While many of the routes in this guide are rated as difficult, there is one moderate option that might be more suitable for families or those seeking a less strenuous ride. The Rhandirmwyn Bridge – The Towy Bridge Inn loop from Cilycwm is a 19.37 km route with a moderate difficulty, offering a good introduction to the area's quiet gravel paths. Additionally, Cwm Rhaeadr Forest is developing a 'Family Fun Ride/circular cycle route' which could be a future option.
Cilycwm's gravel trails offer access to stunning natural and historical sights. You can cycle along the Llyn Brianne Gravel Road, which undulates gently around the beautiful Llyn Brianne Reservoir. Other notable attractions include the historic Llandovery Castle Ruins overlooking the River Towy, and the RSPB Gwenffrwd-Dinas Nature Reserve, known for its bird life and charming river walks with rock cascades.
Absolutely. The Cilycwm area is well-suited for experienced gravel bikers looking for a challenge. Most of the routes in this guide are rated as difficult, featuring significant elevation gains. For example, the The Towy Bridge Inn – Llyn Brianne Dam loop from Cilycwm covers over 60 km with more than 1200 meters of ascent. For those seeking extreme climbs, the wider area also features the demanding Devil's Staircase Climb (Abergwesyn), known for gradients up to 25%.
Yes, many of the no-traffic gravel routes around Cilycwm are designed as circular loops, allowing you to start and finish in the same location without retracing your steps. Examples include the Super Steep Climb – Forest Track loop from Pwll Yr Hyddod and the Llyn Brianne Dam – The Towy Bridge Inn loop from Pwll Yr Hyddod, both offering extensive car-free riding.
The komoot community highly rates the gravel biking experience in Cilycwm, with an average score of 4.8 out of 5 stars. Reviewers often praise the region's expansive natural beauty, the peacefulness of the traffic-free routes, and the rewarding challenges offered by the varied terrain and significant climbs. The stunning views across the Towy Valley and Mynydd Mallaen are frequently highlighted.
Yes, the region is rich in history. Many gravel routes pass near or offer detours to historical landmarks. You can visit the Llandovery Castle Ruins, a Grade II-listed site, or explore the area around Twm Siôn Cati's Cave, linked to a legendary Welsh outlaw. The presence of ancient Roman roads and remote drover's tracks also hints at the historical depth of the trails you'll ride.
The diverse habitats around Cilycwm, from ancient woodlands to upland heath, support a rich array of wildlife. Keep an eye out for golden plover, ring ouzel, and merlin on the open moors of Mynydd Mallaen. Along rivers and streams, you might spot dippers, grey wagtails, and common sandpipers. The area's 'Celtic Rainforest' woodlands are also home to a variety of mosses, lichens, and liverworts.
While specific parking details for each trailhead are best checked on individual komoot tour pages, the region is generally accommodating for outdoor activities. Many routes start from or pass through areas like Pwll Yr Hyddod or Cilycwm village, where parking options are typically available for visitors accessing the trails. It's always advisable to plan your start point and check local parking information beforehand.
The diverse landscapes of Cilycwm offer a rewarding experience throughout much of the year. Spring and autumn provide pleasant temperatures and beautiful scenery, with vibrant foliage or blooming wildflowers. Summer is ideal for longer days and warmer weather, though some trails might be busier. Winter can be challenging due to weather conditions but offers a unique, tranquil experience for well-prepared riders.


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