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Road cycling routes
United Kingdom
Wales
South Wales
Castle

Swansea Marina to Devil's Elbow loop

Hard

5.0

(1)

25

riders

Swansea Marina to Devil's Elbow loop

04:55

106km

1,210m

Road cycling

Tackle the difficult Swansea Marina to Devil's Elbow loop, a 65.8-mile road cycling route with 3971 feet of elevation gain in Bannau Brychei

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Brecon Beacons National Park

Waypoints

A

Start point

Parking

Get Directions

1

82 m

Swansea Marina

Highlight • River

Swansea Marina, is the place "where the city meets the sea", located behind the Swansea barrage at the mouth of the River Tawe.

Tip by

2

36.4 km

Bwlch Bryn-Rhudd

Highlight (Segment) • Mountain Pass

The early slopes are very shallow as you pass from one village to another all the way to Glyntawe where the scenery begins to open up and the routes merge. …

Tip by

3

50.7 km

Devil's Elbow Climb from Heol Senni

Highlight (Segment) • Viewpoint

The Devil’s Elbow epitomises the harsh beauty of hidden Wales. With its crumbling surface and neglected rusting barriers it weaves through beautifully rugged scenery presenting one of the toughest challenges …

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4

51.8 km

Maen Llia Standing Stone

Highlight • Monument

According to legend, the stone goes down to the river, the Afon Llia to drink on occasion. This tall tale seems likely to be an allusion to the fact that …

Tip by

5

67.4 km

Glynneath Hill Climb

Highlight (Segment) • Climb

This climb appears minor in the grand scheme of things, but underestimate it at your peril.

Once you’ve negotiated the junctions in Glynneath the road bends right then rears up …

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B

106 km

End point

Parking

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Way Types & Surfaces

Way Types

44.9 km

42.6 km

14.9 km

3.34 km

114 m

< 100 m

< 100 m

Surfaces

101 km

4.22 km

307 m

114 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 (440 m)

Lowest point (10 m)

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Weather

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Monday 25 May

31°C

15°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How challenging is the Swansea Marina to Devil's Elbow loop?

This is a difficult racebike route, spanning approximately 106 km (66 miles) with a significant elevation gain of around 1,210 meters (3,970 feet). It's considered a 'Hard' road ride, demanding very good fitness due to its substantial climbs and descents, particularly the notorious Devil's Elbow.

How long does it typically take to complete this cycling loop?

On average, cyclists can expect to spend around 4 hours and 55 minutes (17,724 seconds) to complete the entire 106 km loop. However, this duration can vary significantly based on fitness levels, weather conditions, and time spent enjoying the scenic viewpoints.

Where can I park to start this cycling route?

The route officially begins at Swansea Marina. You'll find various parking options available in and around the marina area, though it's advisable to check for specific parking regulations and fees beforehand, especially for longer durations.

What notable landmarks or viewpoints will I encounter on the ride?

The route offers several memorable points of interest. You'll start at Swansea Marina, then encounter the challenging Bwlch Bryn-Rhudd and Glynneath Hill Climb. The highlight is undoubtedly the Devil's Elbow Climb from Heol Senni, which offers amazing valley views. Near its summit, you can also visit the ancient Maen Llia Standing Stone.

What is the terrain like on the Devil's Elbow climb?

The Devil's Elbow is a particularly steep and brutal ascent, averaging around a 10% gradient over 1.8 to 2.9 km, with sections reaching 14% to over 30%. It's known for its 'punchey' sections between switchbacks. While some parts of the overall loop are well-paved, the road surface on the Devil's Elbow itself can be poor in places, with crumbling surfaces, requiring good bike handling skills.

Do I need any permits or pay an entrance fee for cycling in Bannau Brycheiniog National Park?

No, there are generally no entrance fees or specific permits required for cycling on public roads and designated trails within Bannau Brycheiniog National Park (Brecon Beacons National Park). However, always respect local signage, private land, and follow the Countryside Code.

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

The best time to tackle this challenging route is typically during the late spring, summer, and early autumn months (May to September). During these periods, you're more likely to experience milder weather, longer daylight hours, and better road conditions. Winter cycling can be very challenging due to cold, wet weather, and potentially icy or snowy conditions on higher elevations.

Are there places to eat or drink along the way?

While the route passes through some isolated areas, particularly around the Devil's Elbow, you'll find options for refreshments in towns closer to the start and end points, such as Swansea Marina. It's highly recommended to carry sufficient water and snacks, as facilities can be sparse on the more remote sections of the loop.

Is this cycling route dog-friendly?

As a challenging racebike route with significant climbs and descents, this loop is generally not suitable for dogs, whether on foot or carried on a bike. The focus is on road cycling, and the terrain and distance are not conducive to a dog-friendly outing. If you're looking for dog-friendly options in Bannau Brycheiniog National Park, consider shorter, less technical trails.

Does the route intersect with other cycling paths?

Yes, the route does intersect with or run alongside several other paths for portions of its length. Notably, it covers sections of the Skewen Link (7%), EuroVelo 1 - Atlantic Coast Route - part United Kingdom 2 (4%), and National Cycle Network Route 4 (3%). You may also briefly encounter parts of the Cross Valley Route and Cambrian Way.

What kind of scenery can I expect along the route?

The route offers stunning and isolated scenery within Bannau Brycheiniog National Park. You'll experience rugged beauty, sprawling pastureland, and a sense of wilderness. As you ascend, particularly on the Devil's Elbow, you'll be rewarded with majestic views of the valley below. Expect to see an abundance of sheep, twisted trees, and open vistas that showcase the heart of Wales's natural beauty.

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