The Elan Valley Trail is a linear path following the line of the old Birmingham Corporation Railway. The trail starts in Cwmdauddwr, just west of Rhayader and finishes 13 km (8 miles) further up the Elan Valley at Craig Goch Reservoir.
The purpose of the trail is to improve access to the Elan Valley and its countryside, particularly for the less-able. The trail between Craig Goch and Pen y Garreg is classed as a bridleway. Between Pen y Garreg and Rhayader however the trail is a permissive route agreed by the landowners, Dŵr Cymru Welsh Water, Radnorshire Wildlife Trust and Powys County Council and does not follow a right of way. The trail is open for use by walkers, cyclists and horse riders. As on bridleways, cyclists and horse riders are required to give way to walkers and the less-able.

