Route 2 is a uniquely designed route that contains two pathways for a Trainer to follow, which are separated by a column of trees with only a few gaps blocked by cut-able trees. The western path can be explored by novice Trainers early on in the game; the eastern path can be accessed only with the use of HM01 (Cut), which can only be used by Trainers who have obtained the Cascade Badge or have traveled through Diglett's Cave, a tunnel dug by Diglett that leads here from the eastern edge of Vermilion City.
Heading north from Viridian City, the road splits into two and forms a small square that rejoins and continues north past a ledge. This small garden square contains a sign with directions on it. Further north, a cut-able tree can be found along the eastern treeline that leads to the eastern path. After traveling west, the road then curves north and makes its way to a large patch of tall grass below a ledge, which can be avoided by going around to the east. There is another cut-able tree beside the patch of tall grass, also leading to the eastern section. To the north, past the ledge, lies the gate to Viridian Forest.
After leaving the Forest, the route continues in the north with a small road, and makes its way east and then north to Pewter City. The route passes a large patch of tall grass that dominates the small clearing before reaching the city.
South of Pewter City, the route passes the northernmost of two grass patches along the path as it turns to the west. At this point, Trainers can take one of two routes to progress south. The first option is to remain on the main path of Route 2 and travel through the gate and into Viridian Forest, a considerably long and inconvenient detour unless Trainers desire to catch Bug-typePokémon. The second option, available to Trainers who possess Pokémon that know and can use Cut outside of battle, is to remove a small shrub southeast of the grass patch to gain access to the eastern half of the route.
Man who is willing to trade a Mr. Mime in exchange for an Abra
Here, the route meets the northern terminus of Diglett's Cave, a lengthy northwest-southeast tunnel between here and the eastern edge of Vermilion City. South of the cave lies a building that plays home to a Trainer who is looking to part ways with a rare Mr. Mime in exchange for an Abra, except in Yellow Version, when he requests a Clefairy instead. Beyond another Cut-able tree, the route begins to slope downhill as it approaches a gate. Here, Trainers that have at least ten Pokémon registered as "Owned" in their Pokédex can receive HM05 (Flash) from one of Professor Oak's aides.
South of the gate, the western half of the route emerges from the Forest and passes near the second grass patch on the route as it heads south. Meanwhile, the eastern half continues downhill, linking to the western path in two locations via Cut-able tree-blocked passageways before dead-ending south of the second tree. There are several items located on the ground in this clearing, including an Ether and a Parlyz Heal farther south.
This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: Specific list of random Berries that can be obtained.
Generation II, however, significantly tweaked the route layout. The terrain and building layout of the eastern half of Route 2 in Generation II is identical to that of Generation I; however, the item locations have changed. Also, the Trainer who offered to trade Mr. Mime is no longer present in the house. Instead, the building is home to a man who gives the player a Nugget. He may be the same guy who is digging Three Isle Path during Generation III, as he gives the player a Nugget and says he'd like to buy a house in Kanto.
The major changes to Route 2 came along the western half, however. The northern and southern extents are nearly identical to the Generation I version, except for the addition of three Trainers not present in Generation I or Generation III. Viridian Forest no longer exists as a standalone area and has been replaced with a tree maze that is now part of Route 2. The maze, which contains items placed similar to those located in the Generation I and III versions of Viridian Forest, is designed with the same layout as Viridian Forest.
Along the length of the route, the music has been replaced with a new track exclusive to Route 2, a remix of Viridian Forest's music. This remixed music is in major scale, whereas the normal Viridian Forest music is minor scale.
In Generation IV, other than graphical updates, the layout has changed quite a bit in the lower section of the route, but the rest remains identical to Generation I and III. Heading south from Pewter City, the route passes the first of two grass patches along the path as it turns to the west. Unlike Generation II, Viridian Forest remains in Route 2 and the music is now the same as Route 3. The Berry tree in the tree maze is moved to outside the house in the eastern half, which can be accessed by using Cut on the small tree and crossing the divider. However, it is replaced with an Apricorn tree.
By traveling south past Viridian Forest, two Trainers can be found. The first one can be found by jumping off the ledge or go through the grass, while the second one can be found by traveling further south. Now a single path once again, Route 2 travels to the south towards Viridian City.