Heart of Wales Line Trail is a long distance footpath, running 229 kilometres / 142 miles from Craven Arms to Llanelli.

[1][2] The trail marker is a stylized image of a train crossing the Cynghordy Viaduct.

The trail links nearly all of the stations of the Heart of Wales Line allowing for easy car-free access.

Places on the route include Knighton, Builth Wells, Llandovery and Millennium Coastal Park.

[3][1] In May 2024 the organisation released a bilingual website that maps out stations along the trail.