You have to go to Vermillion City, where Surge is there. You have to have Cut to acess it, so before you go, go to Bill's house on the cape near cerulean city, and he'll give you a ticket to the S.S. Anne. In Vermillion, go on board to the ship and find the captain. Before you can, however, you have to battle your rival. When you beat him, go into the captain's quarters, and talk to him and he gives you HM one. You need the Cerulean badge to use it outside of battle (the Leader is Misty). After, go to the tree and use Cut on it and you can battle Surge!
you will need the HMs cut and flash to be able to go to the next town. you need to cut the tree blocking the way east of Cerulean City then you need flash to lighten up the cave. after that you will end in the lightower where Pokemons are buried. there is no gym there but go west you will pass a tunnel going to Celadon City. there you will need the HM cut again to cut the tree blocking the way to the gym where you will fight Erika the gym leader. she uses plant type Pokemons so it's not hard match.
The 4th badge on sapphire is on lavaridge town, flannery being the gym leader. You can get there from mauville city.
The 4th Badge is located in Lavaridge town. There is a Team Magma/Aqua event in Mt. Chimney that you must complete first.
you get it in celadon city
Train your pokemon!
In cerulean cities gym you must beat the leader misty to get the cascade badge.
Its in Viridian City, the Earth Badge, vs. Giovanni
You can get it from the Viridian City GYM. Good Luck!
the fourth gym is in celadon city at the bottom left of the city. the gym leader is erika. the badge is called the rainbow badge
the fourth badge is obtained from crasher wake in pastoria city
the fourth badge is found in celadon city at the bottom in erica's grass type gym
In Celadon city.Celadon City, Leader: Erika. Specialty: Grass. Prize: Rainbow badge.
the boulder badge from brock
In Celadon city.
Fuschia city.
In Vermilion city.
fuschia.
fap
Head to Cinnibar Island for your next badge.
vermillon city
Vermilion city.
island? the fourth badge is in celadon