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Abergwesyn Valley – Llyn Brianne Dam Crossing loop from Llanwrtyd

Routes

Bike touring routes & trails

Abergwesyn Valley – Llyn Brianne Dam Crossing loop from Llanwrtyd

Hard

5.0

(1)

riders

Abergwesyn Valley – Llyn Brianne Dam Crossing loop from Llanwrtyd

04:12

59.8km

1,050m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 22, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Nant Irfon National Nature Reserve

Waypoints

Start point

Train Station

Get Directions

641 m

Caffi Sosban

Highlight • Cafe

Great friendly cafe with a lovely garden.

Tip by

2.77 km

Irfon Valley Road

Highlight (Segment) • Cycleway

A beautiful narrow road that winds up the Irfon valley from Llanwrtyd to Abergwesyn.

This is a quiet valley, often with its own microclimate.

On a good day in the …

Tip by

8.98 km

Abergwesyn Valley

Highlight (Segment) • Gorge

One of the most beautiful stretches of road in Wales or maybe the world, this valley from Abergwesyn to the well-known and much feared Devil's Staircase is an incredible place …

Tip by

25.9 km

View of Llyn Brianne Reservoir

Highlight (Segment) • Lake

Llyn Brianne is a beautiful place for a bike ride. You can stop here or carry around to the view point on the opposite side

Tip by

30.3 km

Llyn Brianne is a spectacular reservoir at almost 300m (990ft) above sea level. It is Wales second largest reservoir by volume and is contained by a 91m (300ft) stone-built dam, which is the largest of its kind in Europe.

Tip by

33.7 km

Dinas

Forest

36.5 km

Rhandirmwyn Bridge

Highlight • River

Built in 1913 the Rhandirmwyn Bridge links the two sides of the Towy valley by this rivetted girder road bridge. On the southern side you'll find the Towy Bridge Inn, a lovely riverside pub.

Tip by

36.5 km

The Towy Bridge Inn

Highlight • Pub

Delightful rural riverside location. Real ales usually from Welsh breweries. There is a large outdoor seating area with views across the river. Popular with walkers, bikers, cyclists and dogs welcome too!

Tip by

37.3 km

Brynglas Cottage

Highlight • Rest Area

We stayed here early in the year with two friends for a winter escape to this gorgeous valley and were treated to a weekend of glorious weather! The host Frede …

Tip by

59.8 km

End point

Train Station

Way Types & Surfaces

Way Types

47.5 km

10.7 km

1.10 km

387 m

< 100 m

Surfaces

35.0 km

23.2 km

1.12 km

387 m

Elevation

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

Highest point (480 m)

Lowest point (110 m)

Weather

Tuesday 26 May

27°C

14°C

53 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

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

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Abergwesyn Valley – Llyn Brianne Dam Crossing loop from Llanwrtyd

Caffi Sosban

Irfon Valley Road

Abergwesyn Valley

View of Llyn Brianne Reservoir

Llyn Brianne Dam Crossing

Rhandirmwyn Bridge

The Towy Bridge Inn

Brynglas Cottage

Nearby routes

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