Taff Trail (Geopark sections)

The full 55 mile / 93km trail extends from Cardiff to Brecon. Within the Geopark one branch of the trail passes through Cwm Taf and Glyn Tarell whilst the other passes through Cwm Taf Fechan. Both routes are clearly marked on OS Explorer and Landranger mapping.

  • Eastern loop: OS grid ref SO 030079 (Cefn Coed y cymmer) to SO 049167(Torpantau).
  • Western loop: SO 030079 (Cefn Coed y cymmer) to SO 045285 (Llanfaes, Brecon).

Walk it or cycle it, you can enjoy the dramatic landscape through which the Trail passes, assured of a gentle gradient.  The Geopark sections run from Cefn Coed-y-cymmer on the northern edge of Merthyr Tydfil north to Llanfaes at Brecon and to Torpantau in the Taf Fechan Forest.


  • Quaternary: glacial moraines etc
  • Carboniferous: Coal Measures, Twrch Sandstone, Limestone,
  • Devonian: Plateau Beds, Grey Grits, Brownstones, Senni Beds & St Maughan’s formations


  • OS Landranger 160, Explorer map OL12
  • Geological — BGS 1:50,000 sheets: 213 ‘Brecon’ & 231 ‘Merthyr Tydfil’


  • Leaflet available to eastern loop up Taf Fechan valley via Torpantau (cyclists and walkers) but not the western loop up Taf Fawr valley via Storey Arms (walkers only).


  • Entry: free


  • Variable; short sections in mountain environment — take care!

Transport links

  • By car — various links
  • By train — nearest mainline stations are at Llandovery to west, Abergavenny to east and Merthyr Tydfil to south — see Traveline Cymru
  • By bus — see Traveline Cymru
  • By bike — NCN8 follows the eastern loop of the Taff Trail

Other attractions nearby