The more gym leaders u go to the harder and longer it will be cause the challengers and the puzzle get tougher so sometimes yes and sometimes no.
Gym
you go to sunnyshore city but don't go to the gym go to the lighthouse and you will find the gym leader talk to him and then he will go back to the gym so you can fight him
Fantina is in the contest hall. Go there and talk to her. Then go back to the gym and she'll be there!
Normally you would go into the cinnibar island gym and beat the gym leader however the gym doesn't exist because of a volcanic eruption so the gym has been temporarily moved to seafoam islands which is not far off from cinnibar island its a short Surf to the east.
In Pokemon Diamond\Pearl, you go to the Veilstone City Gym. In Pokemon Platinum, you go to the Hearthome City Gym.
go catch Giratina and then go to the Sunshore City gym and fight the gym leader
go to the light house in sunny shore the gym leader is there. Then go to the gym once youve talked to him.
Go down to oreburgh mine and talk to the gym leader he will run off now go to oreburgh city and go into gym that gym leader will challenge you.
go right from the seventh gym leader
go into the gym
the 5th gym
there is no ghost gym!! that right