Two proposed routes.

but either way we would have it go into the station. also we would have it so it could be potentially extended from your castle to reach other areas of the map as well.

The one in red may be most feasable but i'll have to look at the town and see how it lines up.

also when built the lines would be straight <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f61b.svg?0" type="image/svg+xml" standby=":p">:p</object>

lets go with the red path