3.8
(5)
52
riders
14
rides
Gravel biking around Gelligaer offers diverse landscapes characterized by upland moorland, rolling hills, and valleys. The region features a mix of paved and unpaved surfaces, providing varied terrain for gravel cyclists. Historical elements, including Roman military installations and Bronze Age burial sites, are present across the landscape. The area's topography ranges from gentle rises to higher points over 470m above sea level, offering a range of elevation challenges.
Last updated: May 5, 2026
4.0
(2)
6
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(2)
3
riders
13.7km
00:57
240m
230m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3
riders
55.6km
04:01
770m
770m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
40.1km
02:42
570m
580m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
77.7km
05:07
920m
920m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Pentwyn Reservoir is the smaller sister to Pontsticill Reservoir, both being separated by a causeway going towards the old Dolygaer outdoor centre. It is a very popular spot with fishermen and outdoor enthusiasts alike. The reservoir is used daily for a mix of watersports such as paddle boarding, kayaking, canoeing and raft building. It is in a beautiful setting, and you have great views north towards Pen y Fan and nice walks nearby.
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Cracking Cafe open, Sat Sun and Wed year round.
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To access this area is a very steep incline and decline into this valley section 7- 9% gradient in either direction. The Taf Fechan LNR comprises about 2.5 km of river with steep valley sides of Carboniferous limestone. The river has eroded the limestone into a narrow gorge in the centre of the site. A mosaic of deciduous woodland on the slopes with a canopy of Beech, Birch and Ash, gives way to Alder and Grey Willow closer to the river.
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It's a beautiful canal but what is amazing is that it runs all the way to Brecon
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There are nearly 20 gravel bike trails around Gelligaer, offering a diverse range of experiences. Most of these routes are rated as difficult, with a few moderate options available for those seeking a less strenuous ride.
Gelligaer's gravel trails feature a mix of upland moorland, rolling hills, and valleys. You'll encounter both paved and unpaved surfaces, with some sections being quite challenging and rugged, characteristic of the South Wales Valleys. Expect significant elevation changes on many routes.
While many routes in Gelligaer are rated as difficult, there are moderate options that might be suitable for families with older children or those comfortable with some elevation. For example, the Waterfall – Nant Glydach Reservoir and Dam loop from Llanwonno is a moderate 13.7 km ride that could be a good starting point.
The region is rich in natural beauty. You can enjoy expansive views from prominent hills like Twmbarlwm Hill, Mynydd Machen Summit, and Caerphilly Mountain Summit. These offer panoramic vistas of the surrounding valleys, mountains, and even the Severn Estuary on clear days.
Yes, Gelligaer has a rich history. You can find visible earthworks and buried remains of Roman military installations, including a well-preserved fort. Gelligaer Common also features Bronze Age burial and ritual sites, such as cairns on Pen Garnbugail. Twmbarlwm Hill also hosts an Iron Age hillfort.
The gravel biking routes in Gelligaer are highly rated by the komoot community, with an average score of 3.8 stars from 5 reviews. Many riders appreciate the varied terrain, the challenging climbs, and the stunning views offered by the upland moorlands and hills.
Yes, many of the gravel routes around Gelligaer are designed as loops, allowing you to start and finish in the same location. Examples include the challenging Trefil Quarry Cliffs – The Flinty Stone loop from Pengam and the Muddy Forest Trail – View of the Rolling Hills loop from Caerphilly County Borough.
The best time for gravel biking in Gelligaer, like much of South Wales, is typically during the drier months from late spring to early autumn (May to October). This avoids the wettest periods, which can make unpaved sections muddy and challenging. However, the exposed moorlands can be windy year-round.
Yes, for those looking for dedicated bike park experiences, there are options nearby. You can find highlights like Cwmcarn — Twrch Mountain Bike Trail and BikePark Wales Trailhead, which offer more structured mountain biking routes.
One of the longer and more challenging routes is the Llanelly Quarry Limekilns – Pontymoile Basin loop from Crosskeys, which covers approximately 77.7 km and features significant elevation gain, requiring very good fitness.
Yes, the Waterfall – Nant Glydach Reservoir and Dam loop from Llanwonno is a moderate route that includes a waterfall, offering a scenic point of interest along the ride.
The gravel biking routes in Gelligaer primarily range from moderate to difficult. The majority of the 19 available routes are classified as difficult, indicating substantial elevation changes, longer distances, and potentially rugged unpaved sections. There are a few moderate options for those seeking a less intense ride.


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