Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Routes
Hiking trails & Routes
United Kingdom
Wales
South Wales
Glyn Tarell

Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop

Routes
Hiking trails & Routes
United Kingdom
Wales
South Wales
Glyn Tarell

Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop

Easy

4.6

(25)

114

hikers

Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop

01:40

4.49km

290m

Hiking

Embark on an easy hike through the Craig Cerrig-gleisiad & Fan Frynych Nature Reserve, where you will discover a dramatic glacial landscape. This route features steep-sided crags and an amphitheatre-shaped valley, giving it an alpine feel. As you hike, you can enjoy panoramic views across the Brecon Beacons, with clear sightlines to Pen y Fan. The trail is a 2.8 miles (4.5 km) loop, involving a climb of 959 feet (292 metres), and typically takes around 1 hours and 39 minutes to complete. You can also reach the Fan Frynych Trig Point for even more expansive vistas.

Accessing the Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop is straightforward, as it is conveniently located just off the A470. For your comfort and safety, sturdy, grippy, and waterproof boots are highly recommended. The terrain can be wet and uneven underfoot, so proper footwear will make a big difference. It is also wise to have some navigational skills, especially if you encounter poor visibility during your hike.

This nature reserve is particularly notable for its unique natural environment. It is home to rare Arctic-alpine plants, which thrive in the specific conditions of this glacial valley. You will also find diverse wildlife throughout the area, making it a great spot for nature observation. The distinct geology and ecosystem set this trail apart within the Bannau Brycheiniog (Brecon Beacons) National Park.

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

A

Start point

Parking

Get Directions

1

7 m

Craig Cerrig Gleisiad National Nature Reserve Entrance

Highlight • Trail

Moderate trail with high elevation, good footwear on wet days is a must .

Tip by

2

1.90 km

Fan Frynych Trig Point

Highlight • Viewpoint

The steep rocky slopes, sharp escarpments and crags are home to rare arctic-alpine plants. These are at their southernmost location in the UK and are not found again until the Alps.

Arctic-alpine wildflowers grow on the north-facing rocky cliffs. They include purple saxifrage, mossy saxifrage, serrated wintergreen and green spleenwort.

The cliffs are, in effect, a vertical woodland with trees and shrubs of hawthorn, rowan, ash and rare whitebeams.

There is a also rich variety of wildflowers and many different mosses and liverworts.

Tip by

3

2.69 km

The Craig Cerrig-gleisiad and Fan Frynych National Nature Reserve is centred around a majestic, steep-sided glacial cwm. Both of around equal height at around 2,064 feet (629 m), the summits of Craig Cerrig gleisiad and Fan Frynych watch over the cwm and provide superb views towards Pen y Fan and its siblings.

Though these summits are arguably bettered by the cwm below which, thanks to its steep, salmon-coloured crags, is a haven for rare plant life like roseroot and purple saxifrage. The cliffs are also home to nesting peregrines, while ring ouzels and ravens can often be spotted in the sky too.

Tip by

4

3.12 km

Craig Cerrig Gleisiad

Highlight • Natural Monument

Apart from the nice views over the top of the 'Craig,' this is a good aiming point in bad weather. With the wall here too, it makes for a good rest stop and a wind break.

Tip by

B

4.49 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

4.46 km

< 100 m

< 100 m

Surfaces

4.48 km

< 100 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

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

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Wednesday 20 May

19°C

11°C

22 %

Additional weather tips

Max wind speed: 18.0 km/h

to get more detailed weather forecasts along your route

This route was planned by komoot.

Save

Edit route

Download GPX

Move start point

Print

Share

Embed on a website

Report an Issue

Frequently Asked Questions

How difficult is the Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop?

This loop trail is generally considered of moderate difficulty. While some sections might be easier, the overall route requires good fitness due to steep elevations, rocky terrain, and potential scrambling. Expect uneven and sometimes boggy paths, especially in wet conditions.

How long does it take to complete the loop?

A typical loop on this trail can take between 2 to 3 hours to complete, depending on your pace and how often you stop to enjoy the views.

Where can I park for the Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop?

The reserve is conveniently located just off the A470, making it relatively easy to access. Parking is usually available near the entrance to the reserve, which serves as the trailhead.

What is the terrain like on the trail?

The terrain is largely rugged and mountainous, featuring steep-sided crags, sharp escarpments, and a glacial cwm. You'll encounter uneven and rocky paths, significant uphill climbs, and potentially boggy or muddy sections, particularly in wetter weather. Sturdy, grippy, and waterproof boots are highly recommended.

What natural features and viewpoints can I expect to see?

You'll experience a dramatic glacial landscape with an impressive amphitheatre-shaped valley and towering crags. Key highlights include the Craig Cerrig Gleisiad National Nature Reserve Entrance, the Fan Frynych Trig Point offering panoramic views, and the striking Craig Cerrig Gleisiad itself. You'll also get expansive views of surrounding mountains like Pen y Fan.

What kind of wildlife and plants can I see in the reserve?

The reserve is a haven for biodiversity. Look out for rare Arctic-alpine plants like purple saxifrage and roseroot, along with orchids, heather, and bilberry. The crags provide habitat for birds such as peregrine falcons, ring ouzels, ravens, and redstarts, as well as numerous butterfly species.

What is the best time of year to hike this trail?

The trail offers rewards year-round, but spring and summer bring vibrant plant life and generally more stable weather. Autumn provides beautiful colours. Be prepared for potentially boggy conditions and colder weather in winter, requiring appropriate gear and navigational skills.

Is the Craig Cerrig-gleisiad & Fan Frynych Nature Reserve loop dog-friendly?

Yes, dogs are generally allowed on the trails within the nature reserve. However, as it's a nature reserve with sensitive wildlife and grazing livestock, it's crucial to keep dogs under close control, preferably on a leash, to protect the environment and other animals.

Do I need a permit or pay an entrance fee for this reserve?

No, there are typically no permits required or entrance fees to access the Craig Cerrig-gleisiad & Fan Frynych Nature Reserve. It is freely accessible to the public.

Is this trail usually crowded?

One of the notable aspects of this trail is that it offers equally spectacular views as more popular routes like Pen y Fan, but with significantly fewer crowds. This provides a more serene and solitary hiking experience, especially compared to other parts of the Brecon Beacons.

Does this route connect with other long-distance trails?

Yes, sections of this route overlap with other well-known paths. Approximately 32% of the trail follows the Beacons Way, and a smaller portion (3%) is part of the South Wales Traverse.

Are there any specific regulations for hiking in Bannau Brycheiniog (Brecon Beacons) National Park?

When hiking in Bannau Brycheiniog National Park, it's important to follow the Countryside Code. This includes sticking to marked paths, taking all litter home, keeping dogs under control, and respecting wildlife and livestock. There are no specific permits required for general hiking.

Nearby routes

Moderate

4.8

4,753

Pen y Fan and Corn Du Circular Walk

02:44h

7.56km

450m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy