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Llanrhaeadr-Ym-Mochnant

Bala Lake – Lake Vyrnwy Dam loop from Llanrhaeadr-ym-Mochnant

Llanrhaeadr-Ym-Mochnant

Bala Lake – Lake Vyrnwy Dam loop from Llanrhaeadr-ym-Mochnant

Hard

5.0

(1)

riders

Bala Lake – Lake Vyrnwy Dam loop from Llanrhaeadr-ym-Mochnant

03:53

75.1km

1,300m

Road cycling

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

Last updated: August 27, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Y Berwyn National Nature Reserve

Waypoints

Start point

Bus stop

Get Directions

19.2 km

Bwlch y Safan Pass

Highlight (Segment) • Mountain Pass

This is the B4391 that travels over the Berwyns, from Bala in the north to Llangynog in the south. The northern half of the route is also the border of Snowdonia national Park.
High point of 486m so great views.

Tip by

29.6 km

Bala Lake

Highlight • Viewpoint

Bala Lake is a large freshwater glacial lake in Gwynedd, Wales. The River Dee, which has its source on the slopes of Dduallt in the mountains of Snowdonia, feeds the …

Tip by

31.8 km

Hirnant Riverside at Parc Cenedlaethol Eryri

Highlight • Forest

Absolutely stunning valley to ride up.

Tip by

36.8 km

Coed y Glyn

Forest

38.3 km

View of the Rolling Hills in Parc Cenedlaethol Eryri

Highlight • Climb

Absolutely fantastic views road surface is great climbs take care over cattle grid.
A wonderful experience.

Tip by

38.5 km

Hirnant Pass Climb (Rhosygwaliau Side)

Highlight (Segment) • Viewpoint

Just under 2km in length, this climb averages 8% but towards the top ratchets up to well over 10% to maximise the suffering

Tip by

40.3 km

Hirnant Pass Climb from Rhiwargor

Highlight (Segment) • Viewpoint

There is more climbing on this side of the Hirnant climb starting from Lake Vyrnwy. The 4km climb can be divided into four sections - the first 1km steeply beyond …

Translated by Google •

Tip by

51.2 km

Lake Vyrnwy Straining Tower

Highlight • Monument

Lake Vyrnwy (Welsh: Llyn Efyrnwy, pronounced [ɛˈvərnʊɨ] or Llyn Llanwddyn) is a reservoir in Powys, Wales, built in the 1880s for Liverpool Corporation Waterworks to supply Liverpool with fresh water. …

Translated by Google •

Tip by

53.0 km

Lake Vyrnwy Dam

Highlight • Monument

This is brilliant peice of architecture thats still in use today, you can feel the sheer power of the flow of water down the dam one side, and the peace and tranquility of the lake the other.

Tip by

75.1 km

End point

Bus stop

Way Types & Surfaces

Way Types

74.5 km

413 m

245 m

Surfaces

71.4 km

3.73 km

Elevation

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

Highest point (500 m)

Lowest point (120 m)

Weather

Saturday 5 September

22°C

12°C

56 %

Additional weather tips

Max wind speed: 23.0 km/h

to get more detailed weather forecasts along your route

Comments

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Bala Lake – Lake Vyrnwy Dam loop from Llanrhaeadr-ym-Mochnant

Bwlch y Safan Pass

Bala Lake

Hirnant Riverside at Parc Cenedlaethol Eryri

View of the Rolling Hills in Parc Cenedlaethol Eryri

Hirnant Pass Climb (Rhosygwaliau Side)

Hirnant Pass Climb from Rhiwargor

Lake Vyrnwy Straining Tower

Lake Vyrnwy Dam

Nearby routes

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