Waun Las National Nature Reserve
Waun Las National Nature Reserve
The best road cycling routes around Waun Las National Nature Reserve
4.6
(30)
1,432
riders
59
rides
Road cycling around Waun Las National Nature Reserve offers routes through the natural parkland of Carmarthenshire. The region is characterized by rolling hills, river valleys, and a mix of open countryside and wooded sections. Road cyclists can expect varied terrain, including ascents and descents, providing diverse challenges.
Best road cycling routes around Waun Las National Nature Reserve
- The most popular road cycling route is Allt Y Rhos – Allt Fawr loop from Llanarthney, an 18.5 miles (29.7 km) trail…
Last updated: May 4, 2026
130
riders
30.0km
01:32
340m
340m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
4.0
(1)
157
riders
76.6km
03:57
980m
980m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
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7
riders
16.9km
00:45
130m
140m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
3
riders
44.9km
02:27
580m
580m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
6
riders
37.2km
01:53
410m
410m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Tips from the Community
Free parking opposite the convenience store/pub. Cafe on the foreshore is excellent.
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Great climb, long but not too steep. Views are absolutely amazing !!!
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The Black Mountain Category 3 Climb from Brynaman is a 5.5km climb with a total ascent of 312m, topping out at 495m. The average gradient is 5.8% with the steepest 100m section reaching 8.4%. Grind out the best gear you can on the consistent slope and gradually as you rise above the valley towards the plateau you are rewarded with some of the best scenery in Wales. You've earnt the descent.
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Half price entry if arriving on bike (£8). Cafe (pretty average) is only accessible with paid entry to the gardens.
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Worth leaving Sustrans Route 4 to take a look at the castle. Only a short diversion
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The memorial at the Castle celebrates Gwenllian, one of Wales's greatest heroines. In 1136 she led a Welsh army against Marcher lord Maurice de Londres. The battle took place nearby and despite her bravery Gwenllian was captured and beheaded. Gwenllian was a princess by birth and marriage. Her husband, Gruffudd ap Rhys, was prince of Deheubarth; her father, Gruffudd ap Cynan, Prince of Gwynedd. King Henry I died in 1135. With no heir, England was left in turmoil. Sensing the chance to win back lands, the Welsh launched a campaign against Anglo Norman rule. Gruffudd travelled to Gwynedd to gather support. With her husband away, Gwenllian led her doomed army against a Norman counter attack. Gwenllian and Gruffudd's greatest legacy was their youngest son, The Lord Rhys, who rose to become the most important Welsh ruler of the time.
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Lots of little diversions en route if you fancy them, good views off Llandeilo
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The Black Mountain Category 3 Climb from Brynaman is a 5.5km climb with a total ascent of 312m, topping out at 495m. The average gradient is 5.8% with the steepest 100m section reaching 8.4%. Grind out the best gear you can on the consistent slope and gradually as you rise above the valley towards the plateau you are rewarded with some of the best scenery in Wales. You've earnt the descent.
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Frequently Asked Questions
How many road cycling routes are available around Waun Las National Nature Reserve?
There are over 60 road cycling routes in and around Waun Las National Nature Reserve, offering a wide range of options for different skill levels and preferences.
What is the general difficulty level of road cycling in this region?
Road cycling around Waun Las National Nature Reserve features varied terrain. You'll find a mix of easy, moderate, and difficult routes. The region is characterized by rolling hills, river valleys, and ascents and descents, providing diverse challenges for all cyclists.
Are there any easy road cycling routes suitable for beginners or families?
Yes, there are 12 easy routes available. A good option for a less strenuous ride is the Dryslwyn Castle – Pontacothi Bridge loop from Llanarthney, which is 10.5 miles (16.9 km) and leads through river valleys and past historic sites.
What kind of challenges can experienced road cyclists expect?
Experienced cyclists can find challenging routes with significant elevation gain. For example, the Paxton's Tower loop from Llanarthney is a difficult 46.3 miles (74.4 km) path with nearly 1,000 meters of ascent, passing by historical landmarks and offering expansive views.
Are there any circular road cycling routes in the area?
Many of the routes around Waun Las National Nature Reserve are circular, allowing you to start and finish in the same location. Examples include the popular Allt Y Rhos – Allt Fawr loop from Llanarthney and the Pontacothi Bridge loop from Llanegwad.
What is the best time of year for road cycling around Waun Las National Nature Reserve?
The region's rolling hills and natural parkland are enjoyable throughout the warmer months, typically from spring to autumn. During these seasons, you can expect more favorable weather conditions for exploring the varied terrain.
What are the winter conditions like for road cycling?
Winter road cycling conditions can be more challenging due to potentially colder temperatures, wet roads, and shorter daylight hours. It's advisable to check local weather forecasts and road conditions before heading out during winter.
Are there any notable viewpoints or scenic spots along the road cycling routes?
Yes, the routes often traverse open countryside and river valleys, offering scenic views. The Paxton's Tower loop from Llanarthney, for instance, is known for its expansive views and passes by historical landmarks.
What do other road cyclists enjoy most about the routes here?
The road cycling routes around Waun Las National Nature Reserve are highly rated by the komoot community, with an average score of 4.6 stars from over 30 reviews. Cyclists often praise the diverse terrain, the mix of climbs and descents, and the natural beauty of the parkland and river valleys.
Are there any longer road cycling routes for endurance training?
For those seeking longer distances, the Paxton's Tower loop from Llanarthney covers 46.3 miles (74.4 km). Another substantial option is the Kidwelly Castle – Kidwelly Castle loop from Llanddarog, which is 44.9 miles (72.3 km).
Where can I find parking for road cycling routes?
While specific parking details vary by route start point, many routes begin from villages like Llanarthney or Llanddarog, where local parking options may be available. It's recommended to check the specific route details on komoot for suggested starting points and potential parking information.
Most popular routes around Waun Las National Nature Reserve
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