The interior lands of Faerûn consisted of the nations, city-states and realms located along the irregular western coastline of the Sea of Fallen Stars and the Shining Plains further south. In the north the Dragonmere arm of the sea extended far to the west, ending close to the Western Heartlands. The lands of the Vilhon Reach formed around a second arm of the sea that led to the southwest.
Well known locations:
| Cormyr | Akanul | Dragon Coast |
| Sembia | Vihon Reach | Shining Plains |
| Airspur | Spur Forest | Suzail |
| Arabel | Dragonmere | King's Forest |
| Westgate | Dragonisle | Selgaunt |
| Chondath | Deepwing Mountains |