List of mountain passes of WalesThe following is a list of notable mountain passes in Wales:Pass nameTranslation/alt. nameRoad numberOS grid ref of summitHistoric countyPrincipal areaNational Park?Maximum ElevationNotesAberglaslyn PassA498CaernarfonshireGwyneddSnowdoniaBwlch Bryn-rhuddEnglish: pass of the crimson hillA4067 between Defynnog and AbercrafBrecknockshirePowysBrecon BeaconsBwlch Cerrig DuonEnglish: pass of the black stonesminor road between Trecastle and Swansea ValleyBrecknockshirePowysBrecon Beacons369mBwlch y Cloddiaua.k.a. 'the Mohican Road'right of way between Llangurig and CwmystwythMontgomeryshirePowys533mRight of way. Eastern approach paved road; western approach largely unpaved.Bwlch y FedwenA458 between Mallwyd and LlangadfanMontgomeryshirePowysBwlch Esgair Gelliroad between Abergwesyn and TregaronCardiganshireCeredigion472mBwlch ar y Fana.k.a. the Gap Roadrestricted byway between Pontsticill and BreconBrecknockshirePowysBrecon Beacons599mRocky track over the pass.BwlchgylfinB4418 between Rhyd Ddu and Dyffryn NantlleCaernarfonshireGwyneddSnowdonia236mBwlch Llyn BachEnglish: pass of the small lakeA487 between Dolgellau and CorrisMerionethshireGwyneddSnowdonia285mBwlch OerddrwsA470 between Dolgellau and Dinas MawddwyMerionethshireGwyneddSnowdonia363mBwlch y ParcA494 between Mold and Vale of ClwydDenbighshireDenbighshire291mthrough the Clwydian RangeBwlch Penbarrasa.k.a. 'Old Bwlch'minor road between Tafarn-y-Gelyn and Llanbedr-Dyffryn-ClwydDenbighshireDenbighshire362mthrough the Clwydian RangeBwlch Pen-y-feidioga.k.a. 'The Gated Road'minor road between Llanuwchllyn and BronaberMerionethshireGwyneddSnowdonia531mBwlch-y-DdeufaenEnglish translation: pass of the two stonesminor road/track between Abergwyngregyn and Vale of ConwyCaernarfonshireGwyneddSnowdonia429mCrimea PassWelsh: Bwlch y GorddinanA470Caernarfonshire & MerionethshireGwyneddSnowdonia385mBwlch y GroesEnglish translation: pass of the crossCommonly known as Hellfire Passminor road between Llanuwchllyn and Dinas MawddwyMerionethshireGwyneddSnowdonia545mHighest paved pass in North Wales.Gospel PassWelsh: Bwlch yr Efengylminor road from Hay-on-Wye to Vale of EwyasBrecknockshirePowysBrecon Beacons549mHighest paved pass in Wales.Horseshoe PassWelsh: Bwlch yr Oernant A542DenbighshireDenbighshire417mMilltir GerrigEnglish translation: mile of stonesB4391 between Llangynog and BalaMerionethshireGwyneddSnowdonia486mNant Ffrancon PassA5 between Bethesda, Gwynedd, and Llyn Ogwen in ConwyCaernarfonshireGwyneddSnowdonia312mPengenfforddA470 between Talgarth and Vale of UskBrecknockshirePowysBrecon BeaconsPen-y-PassEnglish: Llanberis PassA4086CaernarfonshireGwyneddSnowdonia359mPen Rhiw-wenA4069 between Llangadog and BrynamanCarmarthenshireCarmarthenshireBrecon BeaconsRhiw FawrEnglish: Forge Roadminor road between Machynlleth and StaylittleMontgomeryshirePowys509mPen Bwlch LlandrilloDrovers road between Llanarmon Dyffryn-Ceiriog and Llandrillo/CynwydMerionethshireDenbighshire580mUnpaved drovers road over the pass.Storey ArmsA470 between Brecon and Merthyr TydfilBrecknockshirePowysBrecon Beacons435mSychnant PassWelsh: Bwlch Sychnant minor road between Dwygyfylchi and ConwyCaernarfonshireConwy158mTorpantauminor road from Talybont-on-Usk to PontsticillBrecknockshirePowysBrecon BeaconsBwlch Bryn-rhuddA4067BrecknockshirePowysBrecon Beacons