MML-3 is a 33.5 KMs long underground corridor running along Colaba-Bandra-SEEPZ. Length of the corridor is marked with 27 key stations out of which 26 will be underground and 1 at grade. The details of the stations are:
| Sr. No. | Stations | Inter station | Chainage (m) | Interchange |
|---|---|---|---|---|
| 1 | Cuffe Parade | 0 | 0.00 | |
| 2 | Vidhan Bhavan | 1,438 | 1,438 | |
| 3 | Churchgate | 766 | 2,204 | WR Suburban station |
| 4 | Hutatma chowk | 891 | 3,095 | |
| 5 | CST Metro | 815 | 3,910 | CR Terminus |
| 6 | Kalabadevi | 882 | 4,792 | |
| 7 | Girgaon | 719 | 5,511 | |
| 8 | Grant Road | 1533 | 7,044 | WR Suburban Station |
| 9 | Mumbai Central Metro | 916 | 7,960 | WR Terminus, ST bus depot |
| 10 | Mahalaxmi | 1096 | 9,056 | WR Suburban Station |
| 11 | Science Museum | 1163 | 10,219 | |
| 12 | Acharya Atre Chowk | 1059 | 11,278 | |
| 13 | Worli | 1457 | 12,735 | |
| 14 | Siddhivinayak | 1557 | 14,292 | |
| 15 | Dadar | 1404 | 15,696 | |
| 16 | Sitaladevi | 1675 | 17,371 | |
| 17 | Dharavi | 1731 | 19,102 | |
| 18 | BKC | 1810 | 20,912 | |
| 19 | Vidyanagari | 1241 | 22,153 | |
| 20 | Santacruz | 1009 | 23,162 | |
| 21 | Domestic Airport | 2145 | 25,307 | |
| 22 | Sahar Road | 1709 | 27,016 | |
| 23 | International Airport | 952 | 27,968 | |
| 24 | Marol Naka | 1013 | 28,981 | Metro Line 1 |
| 25 | MIDC | 1180 | 30,161 | |
| 26 | SEEPZ | 1216 | 31,377 | |
| 27 | Aarey Depot |