Walkthrough
Connected to Route 13 is Route 14, yet another long path full of both Wild Pokemon and Trainers. You're getting closer to Fuchsia City, but make sure to keep your Pokemon healthy with some Items until you get there.
Wild Pokemon
Grasses:
Pidgey (20%): Levels 33-38
Pidgeotto (20%): Levels 33-38
Oddish (15%): Levels 33-38
Gloom (15%): Levels 33-38
Venonat (15%): Levels 33-38
Venomoth (9%): Levels 33-38
Tauros (5%): Levels 33-38
Scyther (1%): Levels 33-38
Grass - Special Spawns:
Chansey: Levels 33-38
Sky:
Pidgey (60%): Levels 3-56
Pidgeotto (35%): Levels 3-56
Pidegot (5%): Levels 3-56
Sky - Special Spawns:
Dragonite: Levels 3-56
Charizard: Levels 3-56
Articuno: Levels 3-56
Zapdos: Levels 3-56
Moltres: Levels 3-56
Trainers
Camper Beck: Level 37 Flareon
Camper Carter: Level 37 Psyduck, Level 37 Dugtrio
Bird Keeper Benny: Level 39 Pidgeotto, Level 39 Fearow
Bird Keeper Donald: Level 39 Fearow, Level 39 Pidgeot
Ace Trainer Kindra: Level 40 Vaporeon, Level 39 Sandslash, Level 39 Dodrio
Punk Guy Harvey: Level 38 Raticate, Level 38 Raticate
Punk Guy Malik: Level 38 Rhyhorn
Punk Guy Gerald: Level 38 Magmar
Punk Guy Felix: Level 38 Weezing
Roughneck Zeek: Level 38 Machoke
Obtainable Items
Great Balls: Defeat Camper Beck
Great Balls: Defeat Camper Carter
Poke Balls: Defeat Bird Keeper Benny
Hyper Potion: In Bush Near Bird Keeper Benny
Poke Balls: Defeat Bird Keeper Donald
Ultra Balls: Defeat Ace Trainer Kindra
Poke Balls: Defeat Punk Guy Harvey
Poke Balls: Defeat Punk Guy Gerald
Poke Balls: Defeat Punk Guy Malik
Poke Balls: Defeat Punk Guy Felix
Poke Balls: Defeat Roughneck Zeek
Nugget: Near Roughneck Zeek
Golden Razz Berry: Hidden Within Grass Patch
Silver Nanab Berries: Hidden In South Small Path
Golden Pinap Berry: Hidden Near Eastern Picnicker
Post Game
Walkthrough
After defeating the Elite Four and starting the Master Trainers Challenge, you will find a couple of Master Trainers on Route 14. In total, there will be two Master Trainers to defeat.
Trainers
Lass Katrina (Master Trainer): Level 70 Ivysaur
Lass Satoko (Master Trainer): Level 75 Vileplume