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Mynydd Machen Summit – Hengoed Viaduct loop from Hengoed

Routes

Hiking trails & Routes

Mynydd Machen Summit – Hengoed Viaduct loop from Hengoed

Hard

4.5

(4)

hikers

Mynydd Machen Summit – Hengoed Viaduct loop from Hengoed

06:50

23.6km

600m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 3, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Gweunydd Nant y Twyn

Waypoints

Start point

Train Station

Get Directions

1.50 km

Cow Field Trail to Maesycwmmer

Highlight (Segment) • Trail

This trail is a great one for running: It's relatively flat aside from a few inclines, and it's incredibly peaceful. It cuts straight through a cow field, though, so if …

Tip by

3.77 km

Old Quarry

Highlight • Structure

The old quarry is a pretty interesting site to behold as you pass on the road. Set in a small inlet just off the main path, you have to walk through some pretty overgrown fauna to get in.

Tip by

8.43 km

Sirhowy Walk

Highlight • Trail

10.0 km

Pen-Rhiw Warren

Forest

11.1 km

Coetir Machen

Forest

12.0 km

Machen Mountain Summit

Highlight • Viewpoint

12.3 km

Mynydd Machen Summit

Highlight • Viewpoint

Mynydd Machen is a 1,188-foot (362 m) hill in South Wales which affords glorious views over Newport, Cardiff, Steep Holm, Flat Holm, Brean Down, and the Severn Estuary. The summit …

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14.7 km

Woodland Trail

Highlight (Segment) • Viewpoint

This part of the trail is a little flatter than the sections before and after. It's also fairly smooth so makes for good running even when it's wet. Great views down into the valley!

Tip by

23.3 km

Hengoed Viaduct

Highlight • Monument

The coal mining industry transformed the landscape of South Wales and one of the ways it did that was bringing about the construction of railways and, to span valleys, their …

Tip by

23.6 km

End point

Train Station

Way Types & Surfaces

Way Types

18.4 km

3.09 km

812 m

781 m

457 m

< 100 m

Surfaces

13.0 km

5.61 km

2.79 km

1.35 km

712 m

< 100 m

Elevation

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

Highest point (350 m)

Lowest point (130 m)

Weather

Thursday 3 September

19°C

12°C

87 %

Additional weather tips

Max wind speed: 22.0 km/h

to get more detailed weather forecasts along your route

Comments

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Mynydd Machen Summit – Hengoed Viaduct loop from Hengoed

Cow Field Trail to Maesycwmmer

Old Quarry

Sirhowy Walk

Machen Mountain Summit

Mynydd Machen Summit

Woodland Trail

Hengoed Viaduct

Nearby routes

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