| Train | Source | Destination | Days Run from Sitamarhi Junction |
| 13166 - Smi Koaa Express | Sitamarhi Junction (SMI) | Kolkatta Terminal (KOAA) | Mon |
| # | Station | Arrival | Departure | Halt | Distance | Day |
| 1 | Sitamarhi Junction (SMI) | Source | 10:55 PM | 0 Mins | 0 KMs | 1 |
| 2 | Janakpur Road (JNR) | 11:17 PM | 11:19 PM | 2 Mins | 25 KMs | 1 |
| 3 | Kamtaul (KML) | 11:35 PM | 11:37 PM | 2 Mins | 45 KMs | 1 |
| 4 | Darbhanga Jn (DBG) | 12:20 AM | 12:30 AM | 10 Mins | 68 KMs | 2 |
| 5 | Samastipur Jn (SPJ) | 01:35 AM | 01:40 AM | 5 Mins | 105 KMs | 2 |
| 6 | Dalsingh Sarai (DSS) | 02:03 AM | 02:05 AM | 2 Mins | 129 KMs | 2 |
| 7 | Barauni Jn (BJU) | 02:50 AM | 03:00 AM | 10 Mins | 156 KMs | 2 |
| 8 | Kiul Jn (KIUL) | 04:08 AM | 04:10 AM | 2 Mins | 193 KMs | 2 |
| 9 | Jhajha (JAJ) | 05:30 AM | 05:35 AM | 5 Mins | 247 KMs | 2 |
| 10 | Jasidih Jn. (JSME) | 06:07 AM | 06:09 AM | 2 Mins | 291 KMs | 2 |
| 11 | Madhupur Jn. (MDP) | 06:34 AM | 06:36 AM | 2 Mins | 320 KMs | 2 |
| 12 | Asansol Jn. (ASN) | 07:48 AM | 07:58 AM | 10 Mins | 401 KMs | 2 |
| 13 | Durgapur (DGR) | 08:47 AM | 08:49 AM | 2 Mins | 443 KMs | 2 |
| 14 | Bardhaman (BWN) | 09:51 AM | 09:53 AM | 2 Mins | 506 KMs | 2 |
| 15 | Kolkatta Terminal (KOAA) | 12:25 PM | Destination | 0 Mins | 616 KMs | 2 |