Clydach Gorge Viaduct – Clydach Ironworks Ruins loop from Llanelly

Routes

Hiking trails & Routes

Clydach Gorge Viaduct – Clydach Ironworks Ruins loop from Llanelly

Easy

4.8

(5)

hikers

Clydach Gorge Viaduct – Clydach Ironworks Ruins loop from Llanelly

01:50

5.73km

240m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Last updated: August 27, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Cwm Clydach National Nature Reserve

Bannau Brycheiniog National Park

Waypoints

Start point

Get Directions

501 m

Rocky Outcrop Viewpoint in Bannau Brycheiniog National Park

Highlight • Natural Monument

Overgrown path on the way up but views are great

Tip by

1.05 km

Clydach Gorge Viaduct

Highlight • Bridge

1.09 km

Narrow Stone Tunnel and Steps

Highlight • Historical Site

Mind your head

Tip by

1.35 km

Wooden Bridge in Bannau Brycheiniog National Park

Highlight • Viewpoint

1.73 km

Clydach Ironworks Tunnel

Highlight • Structure

fancy a long uphill hike?

Tip by

2.00 km

Clydach Ironworks Ruins

Highlight • Structure

Established in the late 18th Century near the site of an earlier works and forge, Clydach Ironworks continued operating until 1884. Sited in a beautiful location rich in industrial archaeology, …

Tip by

3.74 km

Waterfall in Bannau Brycheiniog National Park

Highlight • Waterfall

3.87 km

Disused Railway Tunnel, Bannau Brycheiniog National Park

Highlight • Structure

Headtorch required

Tip by

5.73 km

End point

Way Types & Surfaces

Way Types

2.89 km

1.81 km

529 m

478 m

Surfaces

2.72 km

993 m

586 m

436 m

368 m

164 m

Elevation

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

Highest point (360 m)

Lowest point (150 m)

Weather

Tuesday 6 October

14°C

6°C

46 %

Additional weather tips

Max wind speed: 24.0 km/h

to get more detailed weather forecasts along your route

Comments

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Clydach Gorge Viaduct – Clydach Ironworks Ruins loop from Llanelly

Rocky Outcrop Viewpoint in Bannau Brycheiniog National Park

Clydach Gorge Viaduct

Narrow Stone Tunnel and Steps

Wooden Bridge in Bannau Brycheiniog National Park

Clydach Ironworks Tunnel

Clydach Ironworks Ruins

Waterfall in Bannau Brycheiniog National Park

Disused Railway Tunnel, Bannau Brycheiniog National Park

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