Overview map Map key Introduction Geology of the Brecon Beacons Changing woodland Human impact Birdlife Getting to and staying in the national park A solitary guided walk? Using this guide 1 North-eastern valleys and ridges Walk 1 Corn Du and Pen y Fan via Cwm Llwch Walk 2 Pen y Fan via Cwm Sere Walk 3 Cribyn via Cwm Sere Walk 4 Cwm Sere ridge ascending Cribyn and Pen y Fan Walk 5 Cribyn via Cwm Cynwyn Walk 6 Fan y Big via Cwm Cynwyn Walk 7 Cwm Cynwyn ridge ascending Fan y Big and Cribyn Walk 8 Fan y Big via Cwm Oergwm Walk 9 Cwm Oergwm and Gist Wen Walk 10 Cwm Oergwm ridge ascending Fan y Big Walk 11 Cwm Oergwm Valley 2 Eastern valleys and ridges Walk 12 Bryn Walk 13 Cwm Tarthwynni circuit Walk 14 Blaen-y-glyn and Allt Forgan Walk 15 Blaen-y-glyn and Craig y Fan Ddu Walk 16 Torpantau circuit 3 South-western valleys and ridges Walk 17 Neuadd Horseshoe: Corn Du, Pen y Fan and Cribyn Walk 18 Cwm Llysiog and Waun Wen Walk 19 Corn Du and Pen y Fan via Cwm Crew Walk 20 Corn Du and Pen y Fan from Pont ar Daf 4 Fforest Fawr Walk 21 Craig Cerrig-gleisiad Walk 22 Fan Fawr Walk 23 Craig Cwm-du and Fan Frynych Walk 24 Fan Frynych, Fan Dringarth and Fan Llia Walk 25 Fan Gyhirych and Fan Nedd 5 Waterfall Country Walk 26 Elidir Trail: Sgwd Gwladus and Sgwd Ddwli waterfalls Walk 27 Waterfall walk Walk 28 Sgwd yr Eira Walk 29 Ystradfellte Falls Walk 30 Afon Nedd and Afon Mellte 6 The Black Mountain (Mynydd Du) Walk 31 Carmarthen Fans and glacial cwms Walk 32 Tair Carn Isaf via Cwm Pedol Walk 33 Sinc Giedd and Carmarthen Fans Walk 34 Afon Twrch Walk 35 Henrhyd Falls and River Tawe Walk 36 Garreg Las via Cwm Sawdde Walk 37 Cribarth Walk 38 Carmarthen Fans via Cwm Giedd Walk 39 Carreg Cennen 7 The Black Mountains (Y Mynyddoedd Duon) Walk 40 Pen Cerrig-calch and Table Mountain Walk 41 Craig y Cilau Walk 42 Crug Mawr and Sugar Loaf Walk 43 Llanthony Priory, Offa and #039;s Dyke and Bal Mawr Walk 44 Lord Hereford and #039;s Knob Walk 45 Castell Dinas and Waun Fach Appendix A Route summary table Appendix B Routes by interest Appendix C Brief Welsh-English glossary Appendix D Useful contacts.