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Mountain biking trails

Pontsticill Reservoir – Pentwyn Reservoir loop from Pentre-bach

Routes

Mountain biking trails

Pontsticill Reservoir – Pentwyn Reservoir loop from Pentre-bach

Moderate

4.8

(10)

riders

Pontsticill Reservoir – Pentwyn Reservoir loop from Pentre-bach

02:03

32.9km

400m

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 20, 2026

Tips

Cycling is not permitted along parts of this route

After 25.5 km for 120 m

After 29.1 km for 125 m

Waypoints

Start point

Train Station

Get Directions

2.21 km

The Three Bridges, Merthyr Tydfil

Highlight • Cycleway

This is a nice stone bridge along the cyclepath just outside Merthyr Tydfil which makes a pretty spot to stop and take a picture.

Tip by

6.18 km

Cefn-coed Viaduct

Highlight • Monument

The Cefn-coed Viaduct is the third-largest viaduct in Wales. This huge, curved structure once carried the Brecon and Merthyr Tydfil Junction Railway and is now part of the Taff Trail, …

Tip by

9.14 km

Pontsarn Viaduct

Viewpoint

10.5 km

Morlais Tunnel South Portal

Highlight • Structure

Easy to miss in the summer when trees in full growth. If you are cycling past the tunnel on the taff trail in the summer heat you'll get a lovely blast of cool air for about 100 yards.

Tip by

10.5 km

Taf Trail

Highlight • Cycleway

The full route provides a fantastic mix of terrain and scenery😊

Tip by

12.8 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

16.3 km

Wooden Bridge in Bannau Brycheiniog Forest

Highlight • Bridge

Around a 6 mile circular peaceful easy for all accessibilities. The forest is so special gives a magical effect of walking through absolutely beautiful.

Tip by

17.0 km

View of Pontsticill Reservoir

Highlight • Viewpoint

Pontsticill Reservoir is one of many stunning Brecon Beacons reservoirs and can be found near to the village of Pontsticill in the county of Powys. It’s been in use since …

Tip by

18.0 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

32.9 km

End point

Train Station

Way Types & Surfaces

Way Types

15.8 km

11.0 km

4.46 km

1.24 km

233 m

173 m

< 100 m

Surfaces

24.3 km

7.53 km

506 m

498 m

Elevation

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

Weather

Tuesday 25 August

23°C

13°C

21 %

Additional weather tips

Max wind speed: 12.0 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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Pontsticill Reservoir – Pentwyn Reservoir loop from Pentre-bach

The Three Bridges, Merthyr Tydfil

Cefn-coed Viaduct

Morlais Tunnel South Portal

Taf Trail

Pontsticill Reservoir

Wooden Bridge in Bannau Brycheiniog Forest

View of Pontsticill Reservoir

Pentwyn Reservoir

Nearby routes

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