| Chiang Mai Main Line | |
|---|---|
| Overview | |
| Status | Operational |
| Owner | State Railway of Thailand |
| Locale | |
| Termini | |
| Stations | 126 |
| Service | |
| Type | Inter-city rail |
| System | Northern Line |
| Operator | State Railway of Thailand |
| Depots |
|
| History | |
| Opened | 26 March 1896 |
| Technical | |
| Line length | 751.42 km (466.91 mi) |
| Num of tracks | 1 |
| Track gauge | 1,000 mm (3 ft 3+3⁄8 in) metre gauge |
Chiang Mai Main Line is a main line of the Northern Line operated by State Railway of Thailand that connects between Hua Lamphong railway station in the central and Chiang Mai railway station in the north, passing through many provinces. It is the second longest railway line in Thailand, after Su-ngai Kolok Main Line. Notable services include the Nakhon Phing Express, the first class train serving the line. Many accidents have occurred on the line in recent years, prompting renovation work to commence on the track in late 2013, finally reopening on 2 December 2013.
| No. | Segment | Year opened |
|---|---|---|
| 1 | Ban Phachi Junction–Lopburi | 1901 |
| 2 | Lopburi–Pak Nam Pho | 1905 |
| 3 | Pak Nam Pho–Phitsanulok | 1907 |
| 4 | Phitsanulok–Ban Dara Junction | 1908 |
| 5 | Ban Dara Junction–Pang Ton Phueng | 1909 |
| 6 | Pang Ton Phueng–Mae Phuak Halt | 1911 |
| 7 | Mae Phuak–Pak Pan | 1912 |
| 8 | Pak Pan–Huai Mae Ta | 1913 |
| 9 | Huai Mae Ta–Ban Pin | 1914 |
| 10 | Ban Pin–Pha Kho | 1915 |
| 11 | Pha Kho–Mae Chang | 1915 |
| 12 | Mae Chang–Nakhon Lampang | 1916 |
| 13 | Nakhon Lampang–Pang Hua Phong | 1916 |
| 14 | Pang Hua Phong–Pang Yang | 1918 |
| 15 | Pang Yang–Chiang Mai | 1926 |
| 16 | Ban Klap–Khok Kathiam (Lopburi Bypass Line) | 2025 |
| Name | Old name | Year changed |
|---|---|---|
| Ayutthaya | Krung Kao | Rama VI period |
| Nakhon Sawan | Nong Pling | N/a |
| Phrom Phiram | Ban Krab Phuang | N/a |
| Tron | Wang Hin | N/a |
| Saraphi | Pa Yang Loeng | 1961 |

| Train no. | Type | Termini | |
|---|---|---|---|
| 3 | Special Express | ฺBangkok-Krung Thep Apiwat | Sawankhalok |
| 4 | Special Express | Sawankhalok/Sila At | Krung Thep Apiwat |
| 7 | Special Express | Krung Thep Apiwat | Chiang Mai |
| 8 | Special Express | Chiang Mai | Krung Thep Apiwat |
| 9 (Utrawithi) | Special Express | Krung Thep Apiwat | Chiang Mai |
| 10 (Utrawithi) | Special Express | Chiang Mai | Krung Thep Apiwat |
| 13 | Special Express | Krung Thep Apiwat | Chiang Mai |
| 14 | Special Express | Chiang Mai | Krung Thep Apiwat |
| 51 | Express | Krung Thep Apiwat | Chiang Mai |
| 52 | Express | Chiang Mai | Krung Thep Apiwat |
| 102 | Rapid | Chiang Mai | Krung Thep Apiwat |
| 105 | Rapid | Krung Thep Apiwat | Sila At |
| 106 | Rapid | Sila At | Krung Thep Apiwat |
| 107 | Rapid | Krung Thep Apiwat | Den Chai |
| 108 | Rapid | Den Chai | Krung Thep Apiwat |
| 109 | Rapid | Krung Thep Apiwat | Chiang Mai |
| 111 | Rapid | Krung Thep Apiwat | Den Chai |
| 112 | Rapid | Den Chai | Krung Thep Apiwat |
| 201 | Ordinary | ฺBangkok-Hua Lamphong | Phitsanulok |
| 202 | Ordinary | Phitsanulok | Hua Lamphong |
| 207 | Ordinary | Hua Lamphong | Nakhon Sawan |
| 208 | Ordinary | Nakhon Sawan | Hua Lamphong |
| 209 | Ordinary | Hua Lamphong | Ban Takhli |
| 210 | Ordinary | Ban Takhli | Hua Lamphong |
| 211 | Ordinary | Hua Lamphong | Taphan Hin |
| 212 | Ordinary | Taphan Hin | Hua Lamphong |
| 301 | Commuter | Hua Lamphong | Lop Buri |
| 302 | Commuter | Lop Buri | Hua Lamphong |
| 303 | Commuter | Hua Lamphong | Lop Buri |
| 304 | Commuter | Lop Buri | Hua Lamphong |
| 311 | Commuter | Hua Lamphong | Rangsit |
| 313 | Commuter | Hua Lamphong | Ban Phachi |
| 314 | Commuter | Ban Phachi | Hua Lamphong |
| 317 | Commuter | Hua Lamphong | Lop Buri |
| 318 | Commuter | Lop Buri | Hua Lamphong |
| 401 | Local | Lop Buri | Phitsanulok |
| 402 | Local | Phitsanulok | Lop Buri |
| 403 | Local | Phitsanulok | Sila At |
| 407 | Local | Nakhon Sawan | Chiang Mai |
| 408 | Local | Chiang Mai | Nakhon Sawan |
| 409 | Local | Ayutthaya | Lop Buri |
| 410 | Local | Sila At | Phitsanulok |
