Highest roads of Wales
Famed for its strikingly rugged landscape, Wales is a country that is part of the United Kingdom. Dominated by the Cambrians, central and north, and by the Brecon Beacons of the south, Wales is a mountainous country on the western side of Great Britain. It is bordered by England to its east, the Irish Sea to its north and west, and the Bristol Channel to its south. It has a varied geography with strong contrasts.
| Mountain road | Elevation | County | Between |
| 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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