Stack Exchange network consists of 178 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Worldbuilding Stack Exchange is a question and answer site for writers/artists using science, geography and culture to construct imaginary worlds and settings. It only takes a minute to sign up.
The high speed train (HST) must have operated in our real world, and correspond to one of the high-speed trains currently or no longer in service. The HST should run at its max operating speed as much as possible and practicable, to save time. Of course, The HST can run at lower speeds, to abate noise and comply with noise regulations in urban residential areas.
Your HSR must include and cover all the colored routes, and all the cities on these routes, in the first map below. You can overlook all the faded out, gray routes in the first map below, like the route connecting Minneapolis/St. Paul to Seattle that calls at Missoula, Billings, Bismarck, Fargo.