The portion of the road, which the Bree-folk called Greenway began at Fornost Erain in northern Eriador, it met with the East Road near Bree, and then continued south through Andrath between the Barrow-downs and the South Downs. After traversing Minhiriath, it reached Tharbad on the Gwathló, where it crossed the river. Then it was known as the Old South Road.
In the later Third Age after the division of Arnor into three realms it became lesser used. Use of the road virtually ended after the Great Plague and the Long Winter when Tharbad was abandoned and its bridge ruined, and the Old South Road to Dunland was mostly lost. The patch of the road around Bree-land became overgrown with grass because of disuse and so was called Greenway.
- J.R.R. Tolkien, Christopher Tolkien (ed.), Unfinished Tales, Index
- J.R.R. Tolkien, The Lord of the Rings, "The West of Middle-earth at the End of the Third Age" [map]
- General Map of Middle-earth
- J.R.R. Tolkien, The Lord of the Rings, The Fellowship of the Ring, "At the Sign of the Prancing Pony"
- J.R.R. Tolkien, The Lord of the Rings, The Fellowship of the Ring, "The Ring Goes South"