Kanto Route 25/Route description

Heading from west to east, Route 25 initially begins as an extension to. To the east, Route 25 comes to a maze of trees (Generations, and ) or shrubs (Generation III). Regardless of the Generation, the maze is full of s ready to battle. Note that if the player loses to Cooltrainer/Ace Trainer Kevin at the end of the route, he cannot be rematched; however, since he gives the player a Nugget before the battle begins, there's no extra benefit by defeating him besides the prize money, which all Trainers give. To the northwest of the maze is a patch of grass containing wild Pokémon.

Near the east end of the maze, there is a table tree blocking an area that contains an item. By removing the tree, Trainers can collect a certain item.

East of the maze, the route opens up to its widest point before condensing slightly near a pair of Trainers (/) or a single Trainer and the first of two ponds near the east end of the route, known as Cerulean Cape (Japanese:   Cape). To the north of a land bridge between the two ponds is the Sea Cottage, the home of Bill.

Route 25 continues east, turning south at the ocean shoreline and passing along a narrow strip of land between the ocean and the eastern pond. At the southern tip of the pond, the route turns west, intersecting the land bridge as it runs along the southern edge of the ponds. Just to the west of the pond, the route turns north for a yard before doubling back to the west, running along the southern edge of the route's main path as it feeds into the "express route", one way portion of Route 24. The existence of the long, narrow bypass south of Route 25 allows for quick, hassle-free travel between Cerulean Cape and its namesake city. However, due to a ledge at the southern terminus of Route 24 in Cerulean City, the reverse is not possible.

In Generations and, the corner connecting Routes 24 and 25 is considered a part of Route 24. In Generations and, it's included with Route 25.