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Mountain biking trails
United Kingdom
Wales
South Wales
Talybont-On-Usk

The Gap — The Brecon Beacons National Park

Moderate

4.6

(106)

703

riders

The Gap — The Brecon Beacons National Park

03:15

35.7km

700m

Mountain biking

Embark on The Gap, a classic mountain biking route through the Brecon Beacons National Park, known for its challenging terrain and expansive views. This 22.2-mile (35.7 km) ride, with 2302 feet (702 metres) of elevation gain, typically takes around 3 hours and 15 minutes to complete. You'll encounter a diverse mix of surfaces, from smooth grass to demanding sections of gravel, rocks, and ruts, including a tricky ravine and significant rock steps on descents. As you climb high into the mountains, reaching elevations up to 600 metres, the trail becomes open and windswept, offering rugged vistas of reservoirs like Talybont and Pontsticill. You'll pass between Cribyn and Fan y Big, with Pen y Fan, the highest point in southern Britain, not far from your path. This sustained and difficult ride demands a good level of fitness.

Planning your visit requires preparation for this exposed route. The trail is officially graded as Difficult, and while technically mostly straightforward, it features steep ascents, descents, and loose rocks that may require you to walk or push your bike. The initial 400-metre climb from Talybont-on-Usk is particularly demanding. It's wise to carry adequate food, clothing, and tools, as the higher sections are exposed to the elements. Be ready for a full-day adventure, as the route offers no manufactured berms or jumps, focusing instead on natural, rugged terrain.

The Gap is celebrated as one of the all-time classic mountain biking experiences in the Brecon Beacons, offering the highest crossing of the park. It seamlessly integrates historical pathways, allowing you to ride along the Brecon Canal and traverse parts of the Taff Trail and Brinore Tramway. This blend of natural beauty and industrial heritage provides a unique

Last updated: April 23, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 4.62 km for 1.04 km

Waypoints

A

Start point

Parking

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1

6.97 km

View of Talybont Reservoir

Highlight • Viewpoint

Great views of Talybont reservoir.

Translated by Google •

Tip by

2

7.12 km

This trail is constantly climbing towards The Gap, generally wide and hard packed in the dry with sections of rocks & stones.

There are many places to stop and enjoy the stunning views both in front and behind you.

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3

7.86 km

Cwm Callan Roman Road Trail

Highlight (Segment) • Viewpoint

An old Roman Road which lends itself magnificently to fun on two wheels. Wide open, with fabulous views, before darting into woodland as it reaches the reservoir.

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4

17.4 km

The Gap Pass

Highlight (Segment) • Viewpoint

This off road trail tackles one of the Brecon Beacons’ classic MTB routes; the Gap. This is the pass between Fan-y-Big and Cribyn, topping out at 600 metres above sea level. It's a technical trail that will test you, whether on a gravel or mountain bike. Be prepared for a bit of hike-a-bike near the top where it gets really chunky!

Tip by

B

35.7 km

End point

Parking

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Way Types & Surfaces

Way Types

23.6 km

7.09 km

2.78 km

1.58 km

683 m

Surfaces

10.8 km

7.32 km

7.03 km

5.90 km

2.98 km

1.34 km

362 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 (590 m)

Lowest point (120 m)

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Weather

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Tuesday 7 July

29°C

11°C

-- %

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Max wind speed: -- km/h

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Comments

July 20, 2021,The Gap - The Brecons & Black
Route taken from Komoot, This route has so much to offer, however couldn’t follow completely as it’s overgrown in a few areas, however Garmin was set to re-route, so no issues.

Started from the road, switch back on to the Canal, then steep initial climb up variable loose dirt & tree routes.
August 9, 2024,Mountain Bike Tour
Rocky downhill chute around the 25km mark is very overgrown with brambles. Argh
NOT suitable for gravelbikes, I was optimistic and very naïve, walked 10k of this route. Worth it though, extremely beautiful views!
In a few kms we are on another planet! Alone in the world ...

Showing Translation

Instead of leaving the tram road on the climb, we stayed on the tram road
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This route was planned by komoot.

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Moderate

4.6

703

The Gap — The Brecon Beacons National Park

03:15h

35.7km

700m

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