4.8
(34)
806
riders
02:30
25.2km
540m
Mountain biking
Get ready for a demanding mountain biking adventure on the Beast of Brenin Trail, a difficult route spanning 15.7 miles (25.2 km). You will climb a significant 1784 feet (544 metres) over approximately 2 hours and 29 minutes, pushing your limits through varied terrain. As you ride, expect to be…
Last updated: April 23, 2026
Tips
Includes a segment in which cycling is not permitted
After 8.06 km for 1.31 km
Waypoints
Start point
Parking
Get Directions
1.74 km
Highlight (Segment) • Trail
Tip by
6.83 km
Highlight • Viewpoint
Tip by
9.74 km
Highlight (Segment) • Forest
Tip by
10.4 km
Highlight (Segment) • Forest
Tip by
10.9 km
Highlight (Segment) • Forest
Tip by
11.7 km
Highlight (Segment) • MTB Park
Tip by
12.1 km
Highlight (Segment) • MTB Park
Tip by
13.9 km
Highlight (Segment) • Trail
Tip by
15.5 km
Highlight (Segment) • MTB Park
Tip by
25.2 km
End point
Parking
Way Types & Surfaces
Way Types
14.8 km
7.94 km
863 m
831 m
812 m
Surfaces
12.1 km
4.97 km
3.83 km
3.44 km
607 m
336 m
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Elevation
Highest point (300 m)
Lowest point (50 m)
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Weather
Powered by Foreca
Saturday 9 May
13°C
3°C
0 %
Additional weather tips
Max wind speed: 21.0 km/h
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This route was planned by komoot.
The Beast of Brenin Trail starts and finishes at the main visitor center in Coed y Brenin Forest Park. There is ample parking available there, though charges may apply. This is also where you'll find facilities like bike hire, a cafe, and toilets.
No, this trail is graded black and is considered the most demanding route at Coed y Brenin. It requires a high level of fitness and skill due to its challenging climbs and technical descents. There's even an intentionally tricky initial section designed to test riders and deter those less capable from attempting the full route. If you're looking for something less intense, Coed y Brenin offers other trails that might be more suitable.
Expect a highly varied and technical terrain. You'll encounter 'monster climbs' and 'bone rattling descents' with features like loose rocky climbs, gnarly descents, stone fly-offs, berms, tabletops, and hips. There are also sections of fast-flowing singletrack, rock-drops, steps, and stone pitch. Surfaces can be loose, uneven, or muddy, with significant rocks and re-armored sections. Specific sections like the 'Adams Family stages' (Gomez, Morticia, Uncle Fester) are known for their rocky and flowing characteristics.
The trail offers breathtaking 'epic views of the Southern Snowdonia mountains' as you traverse through emerald green forests. You'll pass by highlights such as Pistyll Cain Waterfall, and ride through sections known as Gomez Trail (Red) – Dragon's Back, Morticia (Red) Trail, Pugsley Trail, and Uncle Fester Trail. The 'Pink Heifer, Big Doug combo' offers over 4 kilometers of continuous singletrack.
While the trail is approximately 25 kilometers long, it's very demanding. It can take anywhere from 3 to 6 hours to complete, depending on your fitness level, skill, and trail conditions. It often feels significantly longer and more challenging than its statistics suggest.
The trail is generally open year-round, but the best time to visit is typically during the drier months from late spring to early autumn (May to October). During these periods, the trails are less likely to be muddy, offering better grip and a more enjoyable experience. Always check local weather conditions before you go, as Wales can be unpredictable.
Yes, the Beast of Brenin Trail integrates sections from other well-known routes within Coed y Brenin. You'll find it overlaps with parts of the MBR and Dragon's Back trails. Other official trails you might encounter along the route include Cyflym Coch, Minor Taur, Temtiwr, Pink Heifer, Buwch Bren, Dream Time, and Uncle Fester, among many others.
While Coed y Brenin Forest Park generally welcomes dogs, specific rules apply to mountain biking trails. Dogs are usually permitted on a lead on walking trails, but it's often recommended that dogs do not accompany riders on technical mountain bike trails like the Beast of Brenin for safety reasons. Always check the latest regulations at the visitor center upon arrival.
There are no specific permits or entrance fees required to ride the mountain bike trails themselves in Coed y Brenin Forest Park. However, there is a charge for parking at the main visitor center, which helps maintain the facilities and trails. Make sure to pay for parking upon arrival.
Given the demanding nature of the Beast of Brenin, good preparation is key. You should bring adequate fluids, sufficient food, appropriate clothing layers for varying weather, a well-maintained mountain bike, a helmet, and essential tools and spares (e.g., puncture repair kit, pump, multi-tool). A first-aid kit and navigation device are also highly recommended.
Absolutely! Coed y Brenin Forest Park is renowned for its range of trails catering to all abilities. If the Beast of Brenin is too challenging, you'll find several easier, family-friendly, and beginner-suitable trails within the park. These are well-signposted from the visitor center and offer a great introduction to mountain biking in a beautiful forest setting.
Nice little ride out, but I forgot how much of a slog (for little Cheryl) the Dragonback Trail would be. Lots of fire road climbing with some techy rocky and tooth sections. Weather a bit hit and miss. No heavy rain just a steady drizzle.
Red rated trail around the beautiful Coed y Brenin trail centre
Glorious in the sunshine today round the beast trail at coed Y Brennin. unfortunately no photos, I was to busy enjoying myself