Route 30 is a north-south route located in central Johto. The northern terminus of the route is at Route 31 just south of the west entrance of Dark Cave. The southern terminus is at the northern edge of Cherrygrove City. Route 30 is the second route encountered by trainers in Johto. From its southern terminus at Cherrygrove, the route turns northeast to avoid a ledge on the route that overlooks a patch of grass. Heading south, this ledge can be used to avoid the grass altogether.
The route emerges in an open area just north of the ledge. In the center of the area is a house owned by a man who is well-versed in the healing powers of Berries. To the left of his house is, coincidentally, a Berry tree. West of the tree is a southbound-only path containing a ledge preventing northbound access. East of the house is a two-way path that runs along a small pond and through another area of grass.