A hack. Othrwise you can't
Badges are not required to use any of the HMs outside of battle, though some HMs cannot be obtained until after obtaining certain badges. However, they are not required, as traded Pokémon that have learned an HM move in another game can still use the HM move before acquiring any badges.(source: Bulbapedia)
Seafoam Islands but you have to have all 16 gym badges You have go to the cave before blaine's gym an you don't have to have all 16 badges because i did it 14 badges.
You must get 4 badges before you can challenge the Petalburg City Gym.
its the eighth gym and u must get the other 7 gym badges before the last gym hope it helped
no but i have the whole gym battle if you want it.
you have to have 7 gym badges before you can do that. Once you have 7 gym badges you will get a call from the prof. and he will tell you to go to the radio tower.
i think you have to do something before you challenge the gym
You must have 4 badges before you are allowed to challenge the Hearthome City Gym.
we can get 8 gym badges byfighting all the gym leaders in Pokemon pearl.
probably
same as ruby 8 gym badges and 6 contest badges
about 100+, but I have 112 badges now