Lake Vyrnwy Dam – Lake Vyrnwy Straining Tower loop from Lake Vyrnwy

Lake Vyrnwy Dam – Lake Vyrnwy Straining Tower loop from Lake Vyrnwy

Moderate

riders

Lake Vyrnwy Dam – Lake Vyrnwy Straining Tower loop from Lake Vyrnwy

02:04

44.4km

560m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is right next to a parking lot.

Last updated: August 18, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Y Berwyn National Nature Reserve

Waypoints

Start point

Parking

Get Directions

5.04 km

Lake Vyrnwy Reservoir and Tower

Highlight (Segment) • Viewpoint

Lovely smooth road looping around Lake Vyrnwy. A stunning reservoir on the edge of Snowdonia. Roads were beautifully quiet on a summers morning spin. Amazing dam stretching across the water.

Tip by

27.0 km

View of the Valley from Bwlch y Groes

Highlight • Mountain Pass

The climb up to Bwlch-y-Groes from Llanymawddwy is a tough one. It is about 3.4 km long and has about 387 m of vertical ascent to get to the gap …

Tip by

27.1 km

Bwlch y Groes Climb from Lake Vyrnwy

Highlight (Segment) • Viewpoint

Climbed it 30 odd years ago........with young fit legs!! Recently descended it in heavy rain with bike packing gear - makes for a bottom clenching descent - exercise caution at the bottom, there's a tight left hand bend, beware!!

Tip by

37.5 km

Nant y Maes Waterfall

Highlight • River

Along the road you come to a small bridge at the side of it is a beautiful natural waterfall close to Nant y Maes stream.
Stunning waterfall that meets the lake

Tip by

39.8 km

View of the Straining Tower at Lake Vyrnwy

Highlight • Monument

Some great views along this part of the road, well worth a visit.

Tip by

40.4 km

Lake Vyrnwy Dam

Highlight (Segment) • Viewpoint

The dam across the Vyrnwy Valley, Montgomeryshire, was the first large masonry dam, and was completed in 1888. Water from the reservoir supplies Liverpool, travelling there along a 70 mile aqueduct.

Tip by

41.0 km

View of Lake Vyrnwy and the Straining Tower

Highlight • Viewpoint

42.7 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

44.4 km

End point

Parking

Way Types & Surfaces

Way Types

44.5 km

Surfaces

44.5 km

Elevation