It starts in Central on Hong Kong Island and runs through Kowloon into the southwest New Territories, where it ends at Tsuen Wan.
List of stations:
| Station | District | Connection(s) |
| Central | Central and Western | Island Line Airport Express via Hong Kong station Tung Chung Line via Hong Kong station |
| Admiralty | Central and Western | Island Line |
| Tsim Sha Tsui | Yau Tsim Mong | |
| Jordan | Yau Tsim Mong | |
| Yau Ma Tei | Yau Tsim Mong | Kwun Tong Line |
| Mong Kok | Yau Tsim Mong | Kwun Tong Line |
| Prince Edward | Yau Tsim Mong | Kwun Tong Line |
| Sham Shui Po | Sham Shui Po | |
| Cheung Sha Wan | Sham Shui Po | |
| Lai Chi Kok | Sham Shui Po | |
| Mei Foo | Sham Shui Po | |
| Lai King | Kwai Tsing | Tung Chung Line |
| Kwai Fong | Kwai Tsing | |
| Kwai Hing | Kwai Tsing | |
| Tai Wo Hau | Kwai Tsing | |
| Tsuen Wan | Tsuen Wan |
See also: