North Bengal State Railway opened a metre gauge line from Parbatipur to Kaunia in 1879.

The Kaunia Dharla railway lines were converted to metre gauge in 1901.

[1] Prior to the partition of India, the prestigious Assam Mail used to travel from Santahar to Guwahati via Lalmonirhat.

Note: The map alongside presents the position as it stands today (2020).

Karoto Express runs between Santahare Junction (via Bogura-Gaibandha) to Burimari the land port.