Pokémon HeartGold and SoulSilver/Route 31

Route Description
Route 31 is an extremely short east-west route encountered early on in Johto. Essentially it only serves as a connecting route between the northbound Route 30, its easternmost point and the gates of Violet City, its westernmost point. It also provides an entrance to Dark Cave.

This route is the third route that trainers starting in New Bark Town will arrive at. Like the route before it, Route 31 contains more than an even share of ledges that players need to go around to get to Violet City, but may jump over on their way back. A small pond is north of the route, just west of Dark Cave. Featuring few Trainers and a small area, all that a traveling Trainer really has to look out for on this route are the wild Pokémon.

There is a man who seems to be in a sleep-like state that is located next to the pond. He doesn't actually do anything when first encountered, but will be useful later on in the game. At the lookout station on Route 35 leading from Goldenrod, there is a guard who will give the player a with Mail attached to deliver to this man. After he receives the mail, the man will give the player TM44 (Rest).

Trainers
Even as the sole trainer on this route, don't underestimate his worth. After you defeat him he will give you his number, and every time he finds a berry, he'll call you and tell you to come pick it up.

Pokémon
🇨🇴 🇨🇴 🇨🇴 🇨🇴 🇨🇴 🇨🇴 🇨🇴 🇨🇴
 * (20%)
 * (35%)
 * (30%)
 * (10%) (30%)
 * (30%)
 * (15%)
 * (10%)
 * (20%)
 * (35%)
 * (35%)
 * (30%)
 * (15%)
 * (15%)
 * (20%)
 * (40%) (10%)
 * (40%)
 * (40%)
 * (30%)

🇨🇴
 * (O 95%) (G 60%) (S 7%)
 * (O 5%) (G 40%) (S 93%)

🇨🇴 🇨🇴
 * (90%)
 * (10%)