A Gym (Japanese: ジム Gym) is a place where Pokémon Trainers go to train their Pokémon. Just like real life gymnasiums, where one can go to work out and build physical strength, Pokémon Gyms are places where Trainers can go to sharpen their battling skills and where their Pokémon can go to gain experience.
Often specializing in a particular type, Gyms create an environment which allows Trainers to test both their skills and Pokémon against those of others. The most powerful Trainer in a given Gym is called the Gym Leader, who is revered by both the lower-ranking members of the Gym and local fans.
Completing all gyms, elite 4, champions battle frontiers and the battle maison will enable you to find legendary Pokemon on the maps. You can track your progress from this page or from your profile by checking your obtained badges.
Kanto League
Pewter City Gym
Leader: BrockFile:Brock.gif
Team: Geodude Level 13; Onix Level 15
Reward:
Boulder Badge 
Cerulean City Gym
Leader: MistyFile:Misty.gif
Team: Staryu Level 20; Starmie Level 22; Gyarados Level 23
Reward:
Cascade Badge 
Vermilion City Gym
Leader: Lt. SurgeFile:Lt. surge.gif
Team: Pikachu Level 28; Voltorb Level 29; Raichu Level 31; Electrode Level 32
Reward:
Thunder Badge 
Celadon City Gym
Leader: ErikaFile:Erika.gif
Team: Victreebel Level 35; Tangela Level 34; Vileplume Level 36; Venusaur Level 36
Reward:
Rainbow Badge 
Saffron City Gym
Leader: SabrinaFile:Sabrina.gif
Team: Kadabra Level 39; Haunter Level 40; Mr. Mime Level 42; Venomoth Level 40; Alakazam Level 43
Reward:
Marsh Badge 
Fuchsia City Gym
Leader: JanineFile:Janine.gif
Team: Nidoqueen Level 57; Koffing Level 48; Grimer Level 49; Muk Level 50; Weezing Level 55;
Reward:
Soul Badge 
Cinnabar Island Gym
Leader: BlaineFile:Blaine.gif
Team: Growlithe Level 58; Ponyta Level 57; Charmeleon Level 57; Rapidash Level 60; Magmar Level 61; Arcanine Level 64
Reward:
Volcano Badge 
Viridian City Gym
Leader: GiovanniFile:Giovanni.gif
Team: Rhyhorn Level 69; Dugtrio Level 70; Rhydon Level 72; Golem Level 76; Nidoqueen Level 78; Nidoking Level 79
Reward:
Earth Badge 
Elite 4 Member #1): WillFile:Will.gif
Team: Slowbro Level 100; Girafarig Level 100; Exeggutor Level 100; Jynx Level 100; Xatu Level 100; Slowking Level 100
Elite 4 Member #2): KogaFile:Koga.gif
Team: Arbok Level 100; Ariados Level 100; Venomoth Level 100; Forretress Level 100; Crobat Level 100; Weezing Level 100
Elite 4 Member #3): BrunoFile:Bruno.gif
Team: Hitmontop Level 100; Onix Level 100; Steelix Level 100; Hitmonlee Level 100; Hitmonchan Level 100; Machamp Level 100
Elite 4 Member #4): KarenFile:Karen.gif
Team: Umbreon Level 100; Victreebel Level 100; Misdreavus Level 100; Murkrow Level 100; Vileplume Level 100; Gengar Level 100
Kanto Champion: BlueFile:Blue.gif
Team: Pidgeot Level 100; Alakazam Level 100; Rhydon Level 100; Gyarados Level 100; Arcanine Level 100; Venusaur Level 100
Kanto League
Mikan Island Gym
Leader: CissyFile:Cissy.gif
Team: Seadra Level 58; Blastoise Level 60
Reward:
Coral Eye Badge 
Navel Island Gym
Leader: DannyFile:Danny.gif
Team: Nidoqueen Level 60; Machoke Level 61; Scyther Level 61; Electrode Level 63; Geodude Level 62
Reward:
Sea Ruby Badge 
Trovita Gym
Leader: RudyFile:Rudy.gif
Team: Electabuzz Level 65; Exeggutor Level 66; Starmie Level 68; Hitmonchan Level 67; Ninetales Level 68
Reward:
Spike Shell Badge 
Kumquat Gym
Leader: LuanaFile:Luana.gif
Team: Alakazam Level 76; Marowak Level 77
Reward:
Jade Star Badge 
Pummelo Stadium
Leader: DrakeFile:Championdrake.gif
Team: Ditto Level 88; Onix Level 87; Gengar Level 89; Electabuzz Level 90; Venusaur Level 93; Dragonite Level 95
Reward:
Winners Trophy 