Caerphilly Castle – Hengoed Viaduct loop from Nelson

Mountain biking trails

Caerphilly Castle – Hengoed Viaduct loop from Nelson

Moderate

5.0

(4)

riders

Caerphilly Castle – Hengoed Viaduct loop from Nelson

02:13

37.0km

370m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 18, 2026

Tips

Includes a segment in which cycling is not permitted

After 30.7 km for 70 m

Waypoints

Start point

Bus stop

Get Directions

8.26 km

Evan and James James Memorial

Highlight • Monument

This father and son wrote the Welsh National Anthem in 1856. Evan wrote the lyrics and James composed the Melody.

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11.2 km

Taff Trail: Nantgarw to Pontypridd

Highlight (Segment) • Forest

The Taff Trail has some fantastic gravel stretches.

The section from the top of Bwlch Mountain is probably best ridden on a full suspension MTB, but the road down is …

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15.7 km

Coed Caedyrys

Forest

21.0 km

Caerphilly Castle is one of the most complete, still standing castles in South Wales. You can park for free at Morrisons just up the road, and entry is free on certain days. It's worth checking ahead!

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31.2 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 …

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34.1 km

Penallta Park signpost

Highlight • Cycleway

The Taff Trail is a 55 mile waymarked route between Brecon and Cardiff Bay. With the majority of the route on off-road tarmac cycle/ walking path, it's a great way to see South Wales, cover distance and avoid cars.

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