In the city of Olivine, near the top right corner of the map.
It's not in Olivine It's in Cain-wood City You need surf to get there just follow the route were it takes you
If you`re talking about the Johto gyms,it`s in Goldenrod city.Leader is Whitney who specializes in Normal types.
I think that she is in Hearthome City . But my trainer card says it's the pink haired gym leader. I just got Pokemon platinum and it's different from my diamond and pearl games. So that makes it confusing. P.S. My friend got platinum the first day it came out and he told me when I get platinum I should go to Oreburg City then back to Jubilife City. Then go to Floaroma Town and beat Mars then go through Eterna Forest then beat the Eterna city gym leader and then beat Jupiter in Eterna City then go back to Oreburg City and then to Hearthome City. That is how far I am in my game. This is my first time writing something on here but I think I'm right.
In Pokemon platinum, unlike in diamond and pearl, you can challange the hearthome gym on your first visit to hearthome, just go south from eterna onto the cycling road and then head through mt. coronet (entrance south of oreburhg). Just head straight forward and you're in hearthome. (p.s. go to the contest hall and talk to fantina the gym leader first to get her to go to the gym). Hope this helped
CAstelia city. A's u first Enders after the skyarrow bridge. Follow the path to the far end till can only go left(toward you) or right(away from you) go right! In the hall way or street the gym in on the right it's green
Kanto: Vermillion City Johto: Goldenrod City Hoenn: Mauville City Sinnoh: Pastora City
it is close to the 2nd gym
it is in the mauville city
You use your strong(est) Pokemon to kill the Gym Leader's Pokemon.
It's a girl with a clefairy and a milktank.
The third gym is in vermillion city. The Gym Leader is Sarge, and he uses electric-type Pokemon.
Maylene (Veilstone City) uses Fighting-type pokemon. Use Flying or Psychic-type pokemon to defeat her. Wake (Pastoria City) uses Water-type pokemon. Use Grass or Electric-type pokemon to defeat him. I put Maylene and Wake on here cos you can battle both of them third.
Pokémon Chaos Black is a game that was hacked for online play using Pokémon FireRed and Pokémon LeafGreen as a basis for the gaming info because there was no 3rd game for the series. The game of Pokémon Chaos Black is not an official game created by GameFreak.
In Pokémon HeartGold, you can find the 3rd Gym Leader in Goldenrod City.
If ur stuck on the 3rd gym leader go to the places on castelia city on the bottom and then they wil Talk to u
You use your strong(est) Pokemon to kill the Gym Leader's Pokemon.
You get a choice to battle Maylene in Veilstone city 3rd or Wake from Pastoria city.
3rd gym
I have Pokemon platinum the 3rd gym leader always their your probaly just not lucky.
the third gym leadar is Burgh he uses bug type so fire or flying are good he haw 3 Pokemon a leavanny and something and something
The third gym leader in poekmon pearl is maylene, a fighting type gym leader.
In Nimbasa city I believe it is the 3rd house from the pokecenter when you are at the pokecenter there is a sign right by the house.
go to hearthome city and then the contest hall. the leader is there but then go down right. that is wrong that is the 5th gym it is so confusing she is set as the 5th gym leader
ground/rock will be good
go to the 3rd gym badge place battle the gym leader, beat him , talk to officer jenny for your squirtle.