What are the highest roads in Wales?

Famed for its strikingly rugged landscape, Wales is a country that forms the western side of Great Britain and is an integral part of the United Kingdom. Bordered by England to the east, the Irish Sea, and the Bristol Channel, its geography is defined by strong contrasts. The nation is powerfully mountainous, dominated by two major geological regions: the Cambrian Mountains across the center and north, and the Brecon Beacons in the south.

Highest roads of Wales

This formidable, high-relief interior, punctuated by deep valleys and ancient peaks, has necessitated the construction of spectacular mountain passes and winding roads, inviting drivers to explore some of the most challenging and scenic high-altitude routes in the British Isles.

Highest roads in Wales

Mountain roadElevationCountyBetween
Marchlyn Mawr Dam 643m (2,109ft) Caernarfonshire Deiniolen and Marchlyn Mawr
Ffynnon Llugwy 554m (1,817ft) Caernarfonshire A5 and Ffynnon Llugwy
Bwlch yr Efengyl 551m (1,807ft) Brecknockshire Hay-on-Wye and Capel y Ffin
Bwlch y Groes 545m (1,788ft) Merionethshire Llanuwchllyn and Dinas Mawddwy
Bwlch y Cloddiau 533m (1,748ft) Montgomeryshire Llangurig and Afon Diliw

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