A closer look at Line 1 of the Kolkata Metro

First, you can look at the planned Metro network in Kolkata:

https://en.wikipedia.org/wiki/Kolkata_Metro#/media/File:Kolkata_Metro_map.svg

At this time Line 1 is fully completed and a relatively small part of Line 2 has been opened.

Also see this: https://en.wikipedia.org/wiki/Kolkata_Metro_Line_1

The proposed link from Baranagar to Line 4 is not under construction yet.

Here we can see the full list of stations on Line 1 in both directions. This includes the station codes as well as inter-station distances. Different sources may give slightly different distances.