Beat the gym
The fifth gym leader in Pokemon platinum is crasher wake but you get the fourth badge.
victory road north of sunyshore city but you have to have the sunyshore gym badge to get there
....You can't?
the gym is in wait next time type in which version becase diamond pearl and platinum are different d/p veilstone city platinum hearthome.
Beat Crasher Wake in Pastoria city gym.His Pokemon are Gyarados(use electric and rock moves),Quagsire(use grass moves),and Floatzel(use grass and electric).Beat him and get the Fen badge.
In Diamond, Pearl and Platinum 7th gym is in Snowpoint Town.
go 2 mt.cornet top {beware u need 2 beat Cyrus there}
GET THE LAST BADGE......
After you get the seventh badge, you should fly to Oreburg city and use your bike to get up the mud slide. go in the cave to your right. and there should be water to surf on. surf over that and use rock clime. after that it is pretty strait foward untill you get to the spear pillar and go into the distortion world
well put rock in lava, but on the place where you have 2 rocks put the uper one
The 7th badge is the volcano badge given by Blaine the cinnibar island gym leader.
You go to get your 7th Badge in Mossdeep City.
Hearthome's badge
the seventh gym badge snowpoint gym
beat pryce
if you didnt catch im in the distortion world which you go to after the seventh badge or something. you can go back to sendoff spring after you beat the e4 and hell be in tha cave.
you get the coal badge after defeating Roark in eterna city