| State | District | Location | km | mi | Destinations | Notes |
|---|---|---|---|---|---|---|
| Tamil Nadu | Madurai district | Tirumangalam | 0 | 0 |  NH 44 - Madurai, Kanyakumari
|
Eastern end of the highway. |
| Virudhunagar district | Alagapuri | 277 | 172 |  SH 182 - Virudhunagar
|
||
| Srivilliputhur | 277 | 172 |  SH 42 - Sivakasi
| |||
| Thenkasi | Puliyankudi | 277 | 172 |  SH 76 - Sankarankoil
|
||
| Thenkasi | 277 | 172 |   SH 39 / SH 40 - Pavoorchatram, Courtallam
| |||
| Sengottai | 277 | 172 | SH 40 - Courtallam
|
|||
| Kerala | Kollam | Thenmala | 497 | 309 |  SH 2 - Thiruvananthapuram
|
|
| Punalur | 497 | 309 |   SH 48 / SH 8 - Anchal, Ayoor, Pathanapuram
| |||
| Kottarakkara | 497 | 309 |  SH 1 - Thiruvananthapuram, Kottayam, Angamaly
|
|||
| Kollam | 497 | 309 |  NH 66 - Thiruvananthapuram, Alappuzha, Kochi
|
Western end of the highway. Kollam bypass. | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | ||||||
