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Routes
Running trails & routes
United Kingdom
Wales
North Wales
Gwynedd
Ganllwyd

Beast of Brenin Trail

Moderate

180

runners

Beast of Brenin Trail

01:43

14.3km

290m

Running

The Beast of Brenin Trail is a moderate jogging route spanning 8.9 miles (14.3 km) with a challenging 961 feet (293 metres) of elevation gain, typically taking 1 hour and 43 minutes. You will navigate highly varied and technical terrain, including loose rocky climbs, gnarly descents, and sections featuring rock-drops…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

A

Start point

Parking

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1

6.42 km

Mostyn Cottage B&B and Self-Catering Cabins

Highlight • Rest Area

A brilliant adventure base right on the trails in Coed y Brenin Forest. You can rent one of the self-catering wooden chalets or stay in the B&B. The hosts are …

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2

6.97 km

Bridge Over the Afon Mawddach

Highlight • Bridge

A small spectacular bridge over the Afon Mawddach. It's used by several of the mountain bike trails as well as runners and walkers so keep an eye out. Great views …

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3

14.1 km

Coed y Brenin Visitor Centre

Highlight • Parking

Coed y Brenin was Britain's first purpose-built mountain biking center and it remains one of the sport's top destinations.
Eight purpose-built mountain bike trails start at the visitor center and …

Translated by Google •

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B

14.3 km

End point

Parking

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Way Types & Surfaces

Way Types

7.90 km

4.64 km

1.36 km

327 m

Surfaces

4.74 km

2.68 km

2.61 km

2.11 km

1.68 km

405 m

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Elevation

Elevation

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

Highest point (230 m)

Lowest point (90 m)

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Weather

Powered by Foreca

Wednesday 6 May

13°C

6°C

36 %

Additional weather tips

Max wind speed: 18.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Is the Beast of Brenin Trail suitable for jogging?

No, the Beast of Brenin Trail is primarily designed as a challenging mountain biking route and is not recommended for jogging. Its extreme technical difficulty, significant climbs, and varied terrain make it exceptionally challenging and potentially dangerous for runners. While the Komoot tour data might categorize it for jogging, this specific trail is best experienced on a mountain bike.

What is the terrain like on this trail?

The terrain is highly varied and technical. You would encounter loose rocky climbs, gnarly descents, rock-drops, steps, and stone pitches. Sections can be 'pretty slippery' when wet. There are also sections of fire road, which can be long and steep, alongside fast-flowing singletrack with technical features.

Where can I park to access the trail?

The main access point for trails at Coed y Brenin, including the Beast of Brenin, is the Coed y Brenin Visitor Centre. Parking facilities are available there.

Are there any permits or entrance fees required for the trail or Snowdonia National Park?

There are no specific permits or entrance fees required to access the Beast of Brenin Trail itself or to enter Snowdonia National Park. However, parking at the Coed y Brenin Visitor Centre typically requires a fee.

What is the best time of year to visit Coed y Brenin for this trail?

The trail can be ridden year-round, but conditions vary significantly. Spring and autumn offer pleasant temperatures and vibrant scenery. Summer can be busy but generally dry. Winter can bring challenging conditions, with sections becoming very slippery and potentially icy. Always check local weather forecasts before heading out.

Is the Beast of Brenin Trail dog-friendly?

While Coed y Brenin generally welcomes dogs, specific rules may apply to certain trails, especially given the technical nature of the Beast of Brenin. If you plan to bring a dog, ensure it is well-behaved, on a leash, and capable of handling extremely challenging terrain. It's always best to check the latest guidelines from the Coed y Brenin Visitor Centre.

What kind of views can I expect along the route?

The trail offers epic views of the Southern Snowdonia mountains. You'll pass through tranquil forest sections, particularly among majestic tall Douglas firs, and encounter rock-strewn slopes, showcasing the beauty of the Welsh landscape.

Does the trail intersect other well-known paths?

Yes, the route intersects with and shares sections of several other trails within Coed y Brenin, including the MBR, Temtiwr, Minor Taur, Cyflym Coch, Tarw, Buwch Bren, and the Pink Heifer. It also briefly crosses the National Cycle Network National Route 82.

Are there any facilities or amenities nearby?

Yes, the Coed y Brenin Visitor Centre offers various facilities, including a cafe, bike shop, and restrooms. For accommodation, Mostyn Cottage B&B and Self-Catering Cabins are nearby.

What makes the Beast of Brenin Trail so notable?

It's considered Coed y Brenin's longest and most demanding route, renowned for its comprehensive mix of features: monster climbs, bone-rattling descents, fast-flowing singletrack, rock-drops, steps, and stone pitch. It's a 'must-do' for many expert mountain bikers in the UK, designed to test both nerve and physical ability.

What are some key landmarks or features to look out for?

Beyond the challenging terrain, you'll cross the Bridge Over the Afon Mawddach. Keep an eye out for sections like the 'Pink Heifer, Big Doug combo' which offers over 4 kilometers of continuous singletrack through stunning firs.

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