- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°43'31"N 4°8'37"W
- Eastings/Northings: 252040, 205143
- OS Grid: SN520051
- Mapcode Local: GBR GT.7F3H
- Mapcode Global: VH4JM.4W8P
Location and coordinates are for the approximate centre of Cwm Llethryd within this administrative area.
Geographic features and populated places may cross administrative borders.