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United Kingdom
Wales
South Wales
Rhondda Cynon Taf
Mountain Ash East

Cwm Cadlan Nature Reserve – Llwyn-on Reservoir Dam loop from Mountain Ash

Routes
Road cycling routes
United Kingdom
Wales
South Wales
Rhondda Cynon Taf
Mountain Ash East

Cwm Cadlan Nature Reserve – Llwyn-on Reservoir Dam loop from Mountain Ash

Moderate

41

riders

Cwm Cadlan Nature Reserve – Llwyn-on Reservoir Dam loop from Mountain Ash

02:31

53.5km

510m

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: September 24, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

A

Start point

Train Station

Get Directions
1

7.17 km

Bradley's Coffee Shop

Highlight • Cafe

Great coffee shop.

Always welcoming, even in the dead of winter when you’re covered in mud and soaking wet.

Great coffee and cakes.

Tip by

2

17.2 km

Cwm Cadlan Nature Reserve

Highlight (Segment) • Trail

A climb and descent in any direction this takes you over the Cadlan Nature Reserve. Marshy grassland doesn't appear by accident, there's often cloud/drizzle in the air!

Tip by

3

24.9 km

Llwyn-on Reservoir Dam

Highlight • Structure

Llwyn-on reservoir, built in 1926, covers 150 acres and is the largest of the three in the Taff Fawr Valleys area. Walking along the shore you can be immersed in …

Tip by

4

29.4 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

5

39.2 km

Waterfall Along Cycle Route

Highlight • Cycleway

6

50.6 km

Smooth Tarmac Cycleway

Highlight (Segment) • Cycleway

Perfect for your best summer bike

Tip by

B

53.5 km

End point

Train Station

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Way Types & Surfaces

Way Types

24.3 km

19.3 km

8.00 km

1.64 km

188 m

< 100 m

Surfaces

49.1 km

3.85 km

495 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 (400 m)

Lowest point (80 m)

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Weather

Powered by Foreca

Monday 5 October

18°C

13°C

35 %

Additional weather tips

Max wind speed: 9.0 km/h

to get more detailed weather forecasts along your route

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