Lon Las Cymru (South)
Route: Chepstow/Cardiff to Builth Wells via Aberfan, Abergavenny, Merther Tydfil, Brecon, Glasbury, with a link to Hay on Wye.
Distance: Map shows 137 miles of route, of which 39 are traffic-free.
From Cardiff the route follows the largely traffic free Taff Trail, whilst the route from Chepstow goes via Abergavenny crossing the Brecon Beacons National Park. The two spurs link at Glasbury and continue north toward Builth Wells. The route can be accessed by the Heart of Wales Railway Line. There are also good rail links to Chepstow, Newport, Cardiff, Pontypridd, Merthyr Tydfil and Abergavenny.

Published 2003: Buy the official Sustrans NN8A Lôn Las Cymru South cycle route map.
Links to the Lôn Las Cymru (North), Celtic Trail (East), Lôn Cambria & Lôn Teifi, Severn and Thames and Radnor Ring cycle routes.