{{Itlistbod|Rare Candy|Hidden at the end of the bottom path of the tree maze in the far east|RSE|display={{DL|Vitamin|Rare Candy}}}}
{{Itlistbod|Rare Candy|Hidden at the end of the bottom path of the tree maze in the far east|RSE|display={{DL|Vitamin|Rare Candy}}}}
{{Itlistbod|TM Grass|From the girl next to the loamy soil near Route 122 after showing her a {{type|Grass}} Pokémon in the player's current party|RSE|display={{TM|19|Giga Drain}}}}
{{Itlistbod|TM Grass|From the girl next to the loamy soil near Route 122 after showing her a {{type|Grass}} Pokémon in the player's current party|RSE|display={{TM|19|Giga Drain}}}}
{{Itlistbod|Hyper Potion|Hidden in a rock to the left of {{tc|Collector}} Ed and {{tc|Hex Maniac}} Kindra|RSE|display={{DL|Potion|Hyper Potion}}}}
{{Itlistbod|Hyper Potion|Hidden in a rock to the right of {{tc|Collector}} Ed and {{tc|Hex Maniac}} Kindra|RSE|display={{DL|Potion|Hyper Potion}}}}
{{Itlistbod|Elixir|In the first area of the northern path|RSE|display={{DL|Ether|Elixir}}}}
{{Itlistbod|Elixir|In the first area of the northern path|RSE|display={{DL|Ether|Elixir}}}}
{{Itlistbod|Super Repel|Hidden in an empty square amongst the patch of grass west of the Leppa Berries|RSE|display={{DL|Repel|Super Repel}}}}
{{Itlistbod|Super Repel|Hidden in an empty square amongst the patch of grass west of the Leppa Berries|RSE|display={{DL|Repel|Super Repel}}}}
Route 123 begins in the north on a long pier leading from Route 122. Fishing along the pier is blocked by stone barriers, however. At the end of the pier, the route curves to the west. East of this spot, a single Cut-able tree blocks access to a pair of paths through the forest. The north path leads to a Trainer, Psychic Cameron. The south path leads to a Rare Candy in Ruby and Sapphire Versions, or to a Double Battle in Pokémon Emerald.
Back on the main path, Route 123 passes by a loamy soil patch containing three varieties of Berries. To the left of the soil patch is a girl who loves Grass-typePokémon. If Trainers speak to her while carrying a Grass-type in their party, she will present the Trainer with TM19 (Giga Drain).
West of the soil patch, Route 123 meets the first of two shortcut paths in the area, blocked by a tree. By removing this tree, Trainers can avoid a large patch of tall grass on the main path. To the west of the grass, the two paths reunite near a second tree. Removing this tree also allows Trainers to avoid walking through grass to reach another loamy soil patch with two Leppa plants. Otherwise, a northerly trek from the main path, past a Trainer, and through tall grass is necessary to reach the plants.
From this point westward to the section of the route accessible from Route 118, Route 123 is divided by the terrain into a northern path and a southern path. It is possible here to go from the northern path to the southern path via ledges, but not vice versa.
Northern Path
From the start of the path near the Leppa Berries, the path hops down a ledge, passing an Elixir before entering a patch of grass. At the west edge of the grass, the path turns south, hopping down two more ledges (where a grassy corridor leads to the southern path) before returning to the north and forcing travelers into the path of a well-placed Trainer. From here, the path turns west, hopping down a ledge into a grassy area before going over yet another ledge. Here, the path runs south of a small pond. To the left of the pond is a Calcium. Southwest of the item, the northern path crosses over its final ledge and merges with the southern path.
Southern Path
From the Trainer south of the Leppa Berries, the route heads west over a ledge and comes to a fork in the road. The south fork leads the southern path down a ledge while the north fork is a grassy corridor that connects to the northern path. Following the south fork, the path goes over the aforementioned ledge, passes through an empty area, and hops down another ledge to run into the path of Psychic Jacki (who can be bypassed by walking south of the rock, along the treeline). To Jacki's west is a final ledge, as well as a pair of Twins who will partake in a Double Battle. West of the twins, the northern and southern paths merge into a single route once again.
Western terminus
Just west of the merge point, there is a hole in the fence that lines the southern portion of the route in this area, leading to an Ultra Ball.
Farther west, the route passes by the Berry Master's house. Inside, the Berry Master gives out two Berries each day. His wife gives out extremely rare Berries if she is told one of a number of special phrases (see below). Outside, there are six loamy soil patches with two spots each, allowing for 12 different Berry types to be planted.
To the west of the Berry Master's house is the western terminus, where Route 123 becomes Route 118.
In Pokémon Emerald, two Trainers were added to the area south of the six loamy soil patches. Another Trainer was also added in the area east of Psychic Jacki, as well as to the area south of the Leppa Berries.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.
Trivia
This location is home to the most patches of loamy soil of any route in the main series games, with 18 spaces for Berries to be planted.
Despite being of the Bug Catcher Trainer Class, Bug Catcher Davis's overworld Trainer sprite is that of a Youngster.
