Routes Planner Features Updates

Login or Signup

Login or Signup

Login or Signup

Bike touring routes & trails

Rhondda Cynon Taf

Llwyn-on Reservoir Dam Tower – Llwyn-on Reservoir Dam loop from Hirwaun

Bike touring routes & trails

Rhondda Cynon Taf

Llwyn-on Reservoir Dam Tower – Llwyn-on Reservoir Dam loop from Hirwaun

Moderate

10

riders

Llwyn-on Reservoir Dam Tower – Llwyn-on Reservoir Dam loop from Hirwaun

02:00

28.4km

440m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. The starting point of the route is accessible with public transport.

Last updated: August 21, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

A

Start point

Bus stop

1

3.37 km

Penderyn Distillery

Highlight • Structure

The Penderyn whisky distillery was launched in 2004. They produce several different single malts and other spirits in three sites in south Wales. You can visit this distillery and take …

Tip by

2

4.47 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

15.8 km

Llwyn-on Reservoir Dam Tower

Highlight • Viewpoint

Amazing views especially at night with a bright torch

Tip by

4

15.9 km

Garwnant Forest and Lake

Highlight • Forest

5

15.9 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

6

16.1 km

Llwyn Onn Reservoir

Highlight • Structure

Smaller reservoir than others in the area, but with stunning landscape great off road paths to keep you away from the A470

Tip by

7

19.7 km

Cwm Cadlan Nature Reserve

Highlight • Viewpoint

The small road runs from Penderyn in the west over the hill and down to Llwyn-onn Reservoir in the east. It's a nice ride avoiding the busier A4059 to the north.

Tip by

8

24.2 km

Llew Goch Pub

Highlight • Pub

A lovely pub themed pub, roaring fire, good food and nice drink selection.

Tip by

B

28.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

16.7 km

6.02 km

2.91 km

2.73 km

< 100 m

Surfaces

19.1 km

4.23 km

2.37 km

2.04 km

643 m

Sign up to see more specific route details

Sign up for free

Elevation

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

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Today

Friday 30 October

13°C

7°C

0 %

Additional weather tips

Expect light wind and shifting conditions.

to get more detailed weather forecasts along your route

Comments

Want to know more?

Sign up for a free komoot account to join the conversation.

Sign up for free

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Navigate Send to Phone

Move start point

Embed on a website

Report an Issue

Report restricted access

Nearby routes

3.3

59

Taff Trail and Talybont Reservoir Loop

04:43h

63.4km

790m

5.0

37

3 Reservoirs loop: Talybont to Pontsticill to Llwyn-onn via Devil's Elbow — Brecon Beacons National Park

05:26h

78.1km

1,090m

4.3

37

Brynmawr and Tabont-on-Usk loop from Llangynidr

03:52h

58.6km

830m

4.0

34

Talybont-on-Usk loop from Torpantau — Bannau Brycheiniog (Brecon Beacons) National Park

02:11h

24.4km

460m

3.4

24

Kenfig Burrows Nature Reserve to Porthcawl loop

01:10h

20.0km

90m

24

Talgarth, Gospel Pass & Llanthony Priory loop from Crickhowell — Bannau Brycheiniog (Brecon Beacons) National Park

04:39h

65.4km

1,100m

4.5

24

Brecon to Sennybridge loop — Brecon Beacons National Park

02:48h

43.3km

560m

10

Taffs Well to Aberdare loop

04:25h

62.7km

880m

4.7

28

Black Mountain loop from Cwmaman — Brecon Beacons National Park

05:18h

77.2km

1,310m

4.8

20

Blackwood to Rhymney loop from Hengoed Viaduct

03:00h

45.7km

450m

4.8

13

Defynnog and Ystradfellte from Glynneath

03:59h

59.5km

960m

5.0

22

Pontyclun and Llantwit Major loop from Bridgend

03:38h

59.3km

490m