The eastern half of Route 1 is a straight path heading north to Accumula Town. Like other early-region routes, it is lined with trees, and features low-level Pokémon in its long grass. There are patches of grass both at the beginning and end of the path with a grass patch between them and to the right of the path. In Black and White the player first ventures through Route 1 with their friends Cheren and Bianca. Between and to the left of the first and second patches are some steps leading to the sea. When the player acquires Surf they may travel westwards along the water to reach the western half of the route.
The western half of the route leads back east, up some more stairs and then south-west through a number of irregularly-shaped patches of dark grass before terminating at a gate in the south-west that leads to Route 17. Due to the requirement to have Surf to reach this area, in Pokémon Black and White the trainers and wild Pokémon are at much higher levels than those to the east. This is not the case in Black 2 and White 2 as Route 1 is not accessible until the post-game. Thus both halves have high leveled trainers and wild Pokémon
Seasonal changes on Route 1 are completely aesthetic, affecting the color palette of the grass, trees, and flowers. There are no areas which can only be accessed in certain seasons, like in Icirrus City.