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Routes
Bike touring routes & trails
United Kingdom
Wales
South Wales
Brecon

Taff Trail and Talybont Reservoir Loop

Hard

4.0

(3)

62

riders

Taff Trail and Talybont Reservoir Loop

04:43

63.4km

790m

Cycling

Embark on a challenging touring cycling adventure with the Taff Trail and Talybont Reservoir Loop, a difficult route spanning 39.4 miles (63.4 km). You will conquer 2607 feet (794 metres) of elevation gain, with an estimated duration of 4 hours and 43 minutes. As you pedal, you will encounter continuousโ€ฆ

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

A

Start point

Parking

Get Directions

1

928ย m

Biped Cycles

Highlight โ€ข Other

The only bike shop for miles around!

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2

3.56ย km

Monmouthshire and Brecon Canal

Highlight โ€ข Structure

This is the canal tunnel that goes underneath the A40 dual carriageway. It is quite a length and the footway is narrow, so if you are on a bicycle I โ€ฆ

Tip by

3

5.01ย km

Brynich Aqueduct

Highlight โ€ข Historical Site

Brynich Aqueduct carries the Monmouthshire & Brecon Canal over the River Usk. After the green light was given for the aqueduct to be built in 1799, no time was wasted โ€ฆ

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4

8.88ย km

Monmouthshire and Brecon Canal Towpath

Highlight (Segment) โ€ข River

Use this road if you don't want to get soaked on the towpath.

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5

14.8ย km

Talybont Reservoir Gravel Climb

Highlight (Segment) โ€ข Viewpoint

This gravelly climb is a great alternative to the road if youโ€™re riding larger wheels. The trail itself is fine for road bikes with larger wheels or gravel bikes (I โ€ฆ

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6

26.5ย km

Pontsticill Reservoir

Highlight โ€ข Structure

Built in 1927, the Pontsticill Reservoir is a large reservoir in the Brecon Beacons National Park that can hold 3400 million gallons (14,460 million liters) of water. The beautiful reservoir โ€ฆ

Tip by

7

33.0ย km

Pontsarn Viaduct

Highlight โ€ข Historical Site

Good ride

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8

39.8ย km

Llwyn-on Reservoir Dam

Highlight โ€ข Structure

Llwyn-on reservoir, built in 1926, covers 150 acres and is the largest of the three in the Taff Fawr Valleys area. Walking along the shore you can be immersed in โ€ฆ

Tip by

9

50.4ย km

Glyn Tarell on the Taff Trail

Highlight (Segment) โ€ข Cycleway

This section of the Taff Trail is a mixture of surfaced and gravel track climbing up from the valley in the north towards the Storey Arms to the south. It's โ€ฆ

Tip by

B

63.4ย km

End point

Parking

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Way Types & Surfaces

Way Types

30.4ย km

12.0ย km

9.63ย km

6.26ย km

4.19ย km

1.02ย km

Surfaces

28.5ย km

16.5ย km

15.1ย km

3.13ย km

225ย m

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Elevation

Elevation

Nothing selected โ€“ click and drag below to see the stats for a specific part of the route.

Highest point (440ย m)

Lowest point (130ย m)

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Weather

Powered by Foreca

Wednesday 6 May

13ยฐC

6ยฐC

44ย %

Additional weather tips

Max wind speed: 16.0ย km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the terrain like on the Taff Trail and Talybont Reservoir Loop?

The terrain is quite varied, featuring old railway paths, forest roads, and canal towpaths. While much of the Taff Trail is traffic-free, some sections, especially around the reservoirs, can be rough and stony. Expect gravelly forestry tracks on the eastern side of Talybont Reservoir and a mix of surfaced and gravel track climbing towards the Storey Arms.

What type of bicycle is best suited for this route?

Given the varied terrain, including rough and stony sections, a touring bicycle with wider tires (e.g., 38mm) is highly advisable for comfort and stability. While some parts are smooth, a sturdier bike will handle the gravel and forest tracks better.

How long does it typically take to complete this loop?

The full loop is approximately 63.4 km (39.4 miles) long and typically takes around 4 hours and 43 minutes of cycling time. This duration can vary based on your fitness level, the number of stops you make, and weather conditions.

What interesting sights will I see along the route?

You'll encounter diverse scenery and historical points of interest. Highlights include the beautiful views over Talybont Reservoir, the Monmouthshire and Brecon Canal, and the Brynich Aqueduct. You'll also pass the Pontsticill Reservoir and the historic Pontsarn Viaduct, showcasing the region's industrial heritage within the stunning Bannau Brycheiniog National Park.

Where can I park to access the Taff Trail and Talybont Reservoir Loop?

Specific parking information for the Talybont Reservoir area is not detailed, but the route is accessible from various points along the Taff Trail. Many cyclists start from Brecon or near the reservoir itself. Look for designated parking areas in villages or near trailheads within the Bannau Brycheiniog National Park.

Is this loop suitable for beginners?

While some sections of the Taff Trail are family-friendly, the full Talybont Reservoir Loop is rated as 'difficult' due to its length and significant elevation gain (794m up). The climb towards Talybont Reservoir is a notable ascent. It requires good to very good fitness, so it might be challenging for absolute beginners, though experienced touring cyclists will enjoy it.

What is the best time of year to cycle this loop?

Spring and autumn generally offer the most pleasant cycling conditions with milder temperatures and beautiful scenery. Summer can be great, but be prepared for potentially warmer weather and more visitors. Winter cycling is possible but can be challenging due to colder temperatures, shorter daylight hours, and potentially icy or muddy conditions on some sections.

Are there any permits or fees required to cycle in Bannau Brycheiniog National Park?

Generally, there are no specific permits or entrance fees required for cycling on public rights of way or designated cycle paths like the Taff Trail within Bannau Brycheiniog National Park. However, always respect local signage and regulations, especially concerning private land or specific facilities.

Is the Taff Trail and Talybont Reservoir Loop dog-friendly?

The Taff Trail is a multi-purpose route used by cyclists, walkers, and sometimes horse riders. Dogs are generally welcome, but they must be kept under close control, preferably on a leash, especially in areas with livestock or where wildlife is present. Always clean up after your dog.

Does this route connect with other cycling paths?

Yes, this route incorporates significant sections of the National Cycle Network. It uses parts of the Taff Trail (61% of the route) and Lรดn Las Cymru (South) (53% of the route). You'll also find smaller sections overlapping with the Monmouthshire & Brecon Canal towpath and Cycle across the Beacons.

Are there alternative sections for different cycling preferences?

Yes, particularly around Talybont Reservoir. While the official route may include bumpy, gravelly forestry tracks on the eastern side, cyclists have the option to take the quieter country road on the western side if they prefer a smoother surface or have a less robust bike. This flexibility allows you to tailor the experience to your preference.

Are there places to eat or drink along the loop?

While the route passes through some remote areas, you will find opportunities for refreshments in villages along the Taff Trail, particularly closer to Brecon or Merthyr Tydfil. It's always a good idea to carry sufficient water and snacks, especially for the longer, more remote sections of the loop.

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