its your dad in petalburg city
In sapphire, the 5th gym leader is your dad, in that city after Oakdale.
The 6th gym leader in Pokémon Sapphire is found at the Fortree Gym. The name of the gym leader here is Winona.
You have to Dive and then you can battle the Gym Leader.
The 8th Gym Leader in Pokémon Sapphire can be found in Sootopolis City.
The third gym leader in Pokemon Sapphire is Wattson and he is located in Mauville City.
In the Lavaridge Town gym.
In Lavaridge gym.
There in the gym in mossdeep city by the way the gym leader are actually gym leaders.
You can with AR.
In the lavaridge town gym.
the fourth gym its a fire gym
The fourth gym is in Lavaridge the 6th is in fortree.