Walkthrough
After defeating the Cerulean City Gym and have obtained the S.S. Ticket from Bill, you will need to make quick work of the Team Rocket Grunt causing trouble in Cerulean City. After you do, the passage to Route 5 will become accessible. Route 5 is home to the Pokemon Day Care Center and heads south of Cerulean City towards Saffron City; however, since Saffron City is blocked at this point in the game, you will need to use the underground path at the end of Route 5 to get to Route 6. Just outside the Underground Path, you will meet with your Rival and give him your extra S.S. Anne Ticket. Wild Pokemon can be found on Route 5 before you do.
Wild Pokemon
Grasses:
Pidgey (20%): Levels 11-16
Rattata (20%): Levels 11-16
Vulpix (20%): Levels 11-16
Jigglypuff (15%): Levels 11-16
Pidgeotto (10%): Levels 11-16
Psyduck (10%): Levels 11-16
Abra (5%): Levels 11-16
Grasses - Special Spawns:
Chansey: Levels 11-16
Sky:
Pidgey (60%): Levels 3-56
Pidgeotto (35%): Levels 3-56
Pidgeot (5%): Levels 3-56
Obtainable Items
Great Balls: Fenced Middle Grass Area
Ether: Near Southern Gate
Nanab Berries: Near Underground Path Entrance
Revives: From Rival After Giving Him S.S. Ticket
Razz Berries: Within Bush Near Pokemon Day Care Center
Rare Candy: Retrieve Pokemon From Pokemon Day Care Center
Razz Berry: Retrieve Pokemon From Pokemon Day Care Center
Nanab Berry: Retrieve Pokemon From Pokemon Day Care Center
Pinap Berry: Retrieve Pokemon From Pokemon Day Care Center
Silver Razz Berry: Retrieve Pokemon From Pokemon Day Care Center
Golden Razz Berry: Retrieve Pokemon From Pokemon Day Care Center
Silver Nanab Berry: Retrieve Pokemon From Pokemon Day Care Center
Golden Nanab Berry: Retrieve Pokemon From Pokemon Day Care Center
Silver Pinap Berry: Retrieve Pokemon From Pokemon Day Care Center
Golden Pinap Berry: Retrieve Pokemon From Pokemon Day Care Center
Post Game
Walkthrough
After defeating the Elite Four and starting the Master Trainers Challenge, you will find only one Master Trainer on Route 5 that must be defeated.
Trainers
Black Belt Tadashi (Master Trainer): Level 70 Mankey