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Routes
Bike touring routes & trails
United Kingdom
Wales
South Wales
Caerphilly

Hengoed Viaduct – Mynydd Machen Summit loop from Hengoed

Routes
Bike touring routes & trails
United Kingdom
Wales
South Wales
Caerphilly

Hengoed Viaduct – Mynydd Machen Summit loop from Hengoed

Hard

5.0

(4)

14

riders

Hengoed Viaduct – Mynydd Machen Summit loop from Hengoed

02:14

23.0km

480m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 19, 2026

Waypoints

A

Start point

Train Station

Get Directions

1

614 m

Hengoed Viaduct

Highlight • Viewpoint

Hengoed Viaduct is an old railway viaduct that’s now a walkway and extension of NCN Route 47. It offers a nice view over the valley.

The "Wheel o Drams" sculpture …

Tip by

2

710 m

Sirhowy Valley Bike Path

Highlight (Segment) • Cycleway

This segment of the Sirhowy Valley bike path let’s you avoid the main road through Maesycwmmer. Just watch out for pedestrians if you’re going fast!

Tip by

3

3.81 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.

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4

5.72 km

Muddy Forest Trail

Highlight (Segment) • Forest

5

11.5 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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6

11.5 km

Machen Mast

Highlight • Monument

7

14.1 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

8

22.6 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

B

23.0 km

End point

Train Station

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Way Types & Surfaces

Way Types

17.2 km

3.10 km

2.32 km

145 m

135 m

< 100 m

Surfaces

16.6 km

5.67 km

459 m

< 100 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 (360 m)

Lowest point (130 m)

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Weather

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Friday 26 June

25°C

15°C

-- %

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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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