Route 319

Route 319 is the route that connects Route 318 and Tisza Town together. It is notorious for the player being able to encounter the final evolutions of starters from generations two and possibly four or five depending on the version.

Walkthrough
Not much needs to be said for making it through this route. Simply travel south and then east to get to Tisza Town, taking the opportunity to pick up wild starter Pokémon if desired. While some trainers are avoidable on this route, a few fights are mandatory.