| Train | Source | Destination | Days Run from Chennai Egmore |
| 16851 - Ms Rmm Express | Chennai Egmore (MS) | Rameswaram (RMM) | Mon Tue Wed Fri Sat Sun |
| # | Station | Arrival | Departure | Halt | Distance | Day |
| 1 | Chennai Egmore (MS) | Source | 07:15 PM | 0 Mins | 0 KMs | 1 |
| 2 | Tambaram (TBM) | 07:43 PM | 07:45 PM | 0 Mins | 25 KMs | 1 |
| 3 | Chengalpattu Jn. (CGL) | 08:13 PM | 08:15 PM | 0 Mins | 56 KMs | 1 |
| 4 | Melmaruvathur (MLMR) | 08:38 PM | 08:40 PM | 0 Mins | 91 KMs | 1 |
| 5 | Villupuram Jn. (VM) | 09:45 PM | 09:55 PM | 0 Mins | 158 KMs | 1 |
| 6 | Cuddalore Port Jn. (CUPJ) | 10:34 PM | 10:35 PM | 0 Mins | 205 KMs | 1 |
| 7 | Chidambaram (CDM) | 11:14 PM | 11:15 PM | 0 Mins | 243 KMs | 1 |
| 8 | Sirkazhi (SY) | 11:26 PM | 11:27 PM | 0 Mins | 260 KMs | 1 |
| 9 | Mayiladuturai Jn. (MV) | 12:03 AM | 12:05 AM | 0 Mins | 280 KMs | 1 |
| 10 | Kumbakonam (KMU) | 12:43 AM | 12:45 AM | 0 Mins | 311 KMs | 1 |
| 11 | Thanjavur (TJ) | 01:30 AM | 01:32 AM | 0 Mins | 351 KMs | 1 |
| 12 | Tiruchchirappalli Jn. (TPJ) | 03:10 AM | 03:15 AM | 0 Mins | 400 KMs | 1 |
| 13 | Pudukkotai (PDKT) | 04:01 AM | 04:02 AM | 0 Mins | 453 KMs | 1 |
| 14 | Chettinad (CTND) | 04:27 AM | 04:28 AM | 0 Mins | 478 KMs | 1 |
| 15 | Karaikkudi Jn. (KKDI) | 04:44 AM | 04:45 AM | 0 Mins | 490 KMs | 1 |
| 16 | Devakottai Road (DKO) | 04:51 AM | 04:52 AM | 0 Mins | 495 KMs | 1 |
| 17 | Kallal (KAL) | 05:04 AM | 05:05 AM | 0 Mins | 508 KMs | 1 |
| 18 | Sivaganga (SVGA) | 05:08 AM | 05:30 AM | 0 Mins | 530 KMs | 1 |
| 19 | Manamadurai Jn. (MNM) | 05:55 AM | 06:00 AM | 0 Mins | 551 KMs | 1 |
| 20 | Paramakkudi (PMK) | 06:24 AM | 06:25 AM | 0 Mins | 575 KMs | 1 |
| 21 | Ramanathapuram (RMD) | 06:51 AM | 06:52 AM | 0 Mins | 611 KMs | 1 |
| 22 | Mandapam (MMM) | 07:24 AM | 07:25 AM | 0 Mins | 647 KMs | 1 |
| 23 | Pamban Jn. (PBM) | 07:40 AM | 07:41 AM | 0 Mins | 653 KMs | 1 |
| 24 | Rameswaram (RMM) | 08:35 AM | Destination | 0 Mins | 671 KMs | 1 |