4.6
(20)
280
riders
19
rides
No traffic touring cycling routes around Glasfynydd Forest traverse a landscape characterized by extensive coniferous woodlands, open moorland, and grasslands. The Usk Reservoir forms a central feature, with many routes offering views across its waters to the distant Black Mountains. The terrain varies from relatively flat, wide tracks around the reservoir to hilly sections with significant elevation gain through forested areas. This region provides a diverse environment for touring cyclists seeking quiet paths away from traffic.
Last updated: June 29, 2026
5
riders
37.7km
02:51
610m
610m
Cycle the difficult 23.4-mile Trecastle and Myddfai loop from Usk Reservoir, gaining 2012 feet with diverse Brecon Beacons views.
3.0
(1)
24
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
3.0
(1)
11
riders
28.9km
02:26
480m
480m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
27.0km
02:17
360m
360m
Hard bike ride. Good fitness required. You may need to push your bike for some segments of this route.
5.0
(3)
32
riders
43.0km
02:48
540m
540m
This difficult 26.7-mile touring cycling loop from Llandovery to Dolaucothi Gold Mine offers challenging climbs and scenic Welsh views.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Popular around Glasfynydd Forest
Stop, listen, and relax with nature sounds
1
0
Excellent track around the reservoir suitable for most bikes with gravel tyres. The Usk Reservoir, also known as Cronfa Wysg in Welsh, sits at an elevation of 1,006 feet (307 m) in the upper Usk Valley within the Brecon Beacons National ParK. It marks the county boundary between Carmarthenshire and Powys.
1
0
A beautiful section the Cycle Across the Beacons route, with the road passing to the South of the Usk reservoir and crossing the River Usk itself.
1
0
Fab but the roads over the top are NOT ROADS they are farm tracks. We had to carry our bikes over styles and push them through over animal tracks Would have broken a wheel otherwise However a fab experience none the less TIP: always check the pub is actually open and what time they close
0
0
A nice flat section along the valley bottom next to grassland floodplain and the glistening River Cothi. Smooth tarmac and a quiet road, it is any rider's dream
0
0
Dolaucothi is the only known Roman Gold Mine in the UK. If you book a tour you’ll get the chance to walk over ancient surface workings and go underground to see how the Romans mined for gold, using advanced techniques in an era long before explosives. If you are thinking of touring the mines, pre-booking is essential. ("Walk-ins" are not accepted). Also you will need a change of footwear with you - cycling shoes would be unsafe in the terrain.
0
0
There are over 20 touring cycling routes in Glasfynydd Forest specifically curated for minimal traffic, offering a peaceful experience. These range from easy loops to more challenging rides.
The routes in Glasfynydd Forest feature diverse terrain. You'll find wide, stoned tracks, particularly around the Usk Reservoir, as well as sections through coniferous plantations, moorland, and hilly landscapes. Some routes, like the Trecastle and Myddfai loop from Usk Reservoir, include significant elevation gain, while others, such as the Usk Reservoir Track – Stream Under Old Metal Bridge loop, are mostly level.
Yes, for an easy and family-friendly option, consider the Usk Reservoir Track – Stream Under Old Metal Bridge loop from Usk Reservoir Dam. This 9.5 km route follows a wide stoned track around the reservoir, making it suitable for most bikes with 35mm+ wheels and offering beautiful views.
Parking facilities are available, particularly at the northern end of the Usk Reservoir dam. This provides convenient access to several of the no traffic routes that start or pass through the reservoir area.
Glasfynydd Forest offers a great cycling experience year-round. Spring and autumn provide pleasant temperatures and vibrant scenery, while summer allows for longer daylight hours. Even in winter, the quiet trails can be enjoyed, especially on crisp, clear days, though some sections might be muddy. The forest's designation as an International Dark Sky Reserve also makes it unique for night-time adventures.
Many of the trails in Glasfynydd Forest are suitable for cycling with dogs, provided they are well-behaved and kept under control, especially around wildlife and other users. Always ensure your dog is comfortable with the distance and terrain, and be mindful of livestock in open areas.
Yes, many of the routes are designed as loops, offering a circular experience. For example, the Ynysfaen Campsite – Usk Reservoir Track loop from Trecastle is a 28.9 km circular route that winds through woodlands and hilly sections.
Cyclists can enjoy stunning views of the Usk Reservoir and the majestic Black Mountains from various points. The routes also traverse extensive coniferous woodlands, moorland, and grasslands. The tree reflections on the reservoir's surface are a particularly beautiful sight. Keep an eye out for diverse wildlife, including red kites and buzzards.
The area is highly rated by the komoot community, with an average score of 4.6 stars. Reviewers often praise the tranquility of the no traffic routes, the stunning reservoir views, and the diverse landscapes that make for a rewarding cycling experience.
For those seeking a challenge, routes like the Trecastle and Myddfai loop from Usk Reservoir offer significant elevation gain over 37.7 km, traversing varied forest and open landscapes. Another challenging option is the Usk Reservoir Track loop from Trecastle, which covers 27 km with substantial climbs.
While the routes themselves focus on natural, traffic-free environments, you'll find picnic facilities near the Usk Reservoir dam. For cafes and pubs, you would typically need to venture into nearby villages such as Trecastle or Myddfai, which are often incorporated into longer touring routes.


Browse the best Cycling routes in other regions.