I enjoy travelling to remote places and to places that can be accessed by train or boat but not by car. What passenger train station is furthest from any regular road?
By regular road, I mean a publicly accessible road, connected to the main network of roads on the continent or island, maintained to be accessible by regular passenger cars year-round (barring extreme weather).
For the sake of this question, I will measure "furthest" as train kilometres to the nearest scheduled (flag) stop reachable by road. In other words, if one drives as far as possible, then how many more km must one at minimum do by train to get there? Freight-only railway lines don't count because I can't travel there as a tourist.
For example, the train station in Labytnangi is apparently 575 km by train from the nearest regular road in Pechora (the distance by boat is probably longer as I'm not sure if there are regular roads north of Priobye, I speculate taking a car by boat may be cheaper than by train). There are closer roads but one cannot drive a regular passenger car to Moscow, Madrid, or Manchuria from there, or at least not year round. Although the Obskaya-Bovanenkovo line is even more remote, it does not have regular passenger traffic.
Is Labytnangi a record, or are there train stations from which one need to travel more than 575 km by train to reach the nearest regular road?
Related but different question: What is the most remote railway line in the world?