Bwlch y Groes (Pass of the Cross) is one of the highest public road mountain passes in Wales. The views from the top of Bwlch y Groes are stunning with views across the Dyfi valley and Cadair Idris. This 17 mile breathtaking route lies on minor roads linking Dinas Mawddwy and Llanuwchllyn in the heart of the Snowdonia National Park and Lake Vyrnwy.

The route was part of the pilgrim's route from North West Wales to St David's in South Wales. A cross, which is humble in appearance, is not on a map. It can be found just below the summit at the junction of the road that leads down from Lake Vyrnwy. It was placed on the route as a symbol of faith and strength comforting travellers since medieval times.

Cycling the route is definitely not for the faint hearted!

Andy

April 5, 2023

Great in dry. Quite a sketchy descent in the rain

AndrewOn2Wheels

September 21, 2025

Incredibly difficult but rewarding climb.

Second highest pass in Wales.
A relentless climb with no breaks or easy period with the steepest ramp hitting 25% towards the end of the effort.

1.84 miles
Average 11%
Max 25%

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Details

Informations

Distance 3.47 km

Uphill 400 m

Downhill 10 m

Weather

Today

Monday 27 October

11°C

7°C

100 %

If you start your activity now...

Max wind speed: 28.0 km/h

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See rides here

Take Me There

Location: Mawddwy, Gwynedd, North Wales, Wales, United Kingdom

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