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Pontsarn Viaduct – Pontsticill Reservoir loop from Penydarren

Pontsarn Viaduct – Pontsticill Reservoir loop from Penydarren

Moderate

riders

Pontsarn Viaduct – Pontsticill Reservoir loop from Penydarren

01:09

24.2km

300m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: April 5, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Bannau Brycheiniog National Park

Cwm Taf Fechan Woodlands Site of Special Scientific Interest

Waypoints

Start point

Bus stop

Get Directions

3.54 km

Pontsarn Viaduct

Highlight • Historical Site

Good ride

Tip by

3.79 km

Cefn-Coed Viaduct

Highlight • Viewpoint

It was really amazing to visit such an old structure and to enhance the knowledge about history. Additionally it gives a better view of the whole Merthyr Town which was amazing.

Tip by

4.13 km

Pontsarn Viaduct

Highlight • Monument

Pontsarn Viaduct was built in the 1860s to carry the Brecon and Merthyr Railway over the Taf Fechan river. The viaduct has seven arches and is situated in a very picturesque landscape.

Tip by

7.81 km

Pontsticill Reservoir

Highlight • Structure

Pontsticill Reservoir is a great location for its scenic beauty and because it is the start of many hiking and biking trails. There is a nice trail that actually goes …

Tip by

9.45 km

West Shore Road, Pontsticill Reservoir

Highlight (Segment) • Trail

If you're not equipped for the gravel track on the East shore of Pontsticill Reservoir, the road on the West shore offers a fun tarmac alternative. A nice long straight …

Tip by

10.4 km

View of the Lake in Bannau Brycheiniog National Park

Highlight • Lake

11.6 km

Pentwyn Reservoir

Highlight • Lake

Pentwyn Reservoir is the smaller sister to Pontsticill Reservoir, both being separated by a causeway going towards the old Dolygaer outdoor centre. It is a very popular spot with fishermen …

Tip by

13.4 km

Pontsticill Lake Canoe Launch

Highlight • Rest Area

This jetty on Pintsticill’s west side is used as a launching point for kayakers and canoers.

Tip by

24.2 km

End point

Bus stop

Way Types & Surfaces

Way Types

13.7 km

7.19 km

2.86 km

277 m

137 m

< 100 m

Surfaces

22.9 km

1.12 km

137 m

< 100 m

Elevation

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

Highest point (370 m)

Lowest point (220 m)

Weather

Friday 26 June

23°C

14°C

51 %

Additional weather tips

Max wind speed: 24.0 km/h

to get more detailed weather forecasts along your route

Comments

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Pontsarn Viaduct – Pontsticill Reservoir loop from Penydarren

Pontsarn Viaduct

Cefn-Coed Viaduct

Pontsarn Viaduct

Pontsticill Reservoir

West Shore Road, Pontsticill Reservoir

View of the Lake in Bannau Brycheiniog National Park

Pentwyn Reservoir

Pontsticill Lake Canoe Launch

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