If you are talking about the 8th gym leader in Johto, you go to New Bark Town, surf east, and go to the Pokemon League.
If it's the 8th gym leader in Kanto, go to Saffron City to receive a Hoenn starter from Steven Stone.
you need to beat the 8th gym leader in blackthorn city. glad to be of service.
u will find him on Cinnabar Island near the northern side. But he won't battle you until you beat Blaine over at Seafoam Islands. hen go talk to him and he will return to his gym where you can then battle him.
you go to cianwood city. but you have to surf there. Edit: Actually, you have to go to Cianwood before you beat Jasmine. After you beat her go east past Mahogany to Blackthorne City and face the 8th Gym.
yes
you can continue to the 8th gym, but you will not be able to enter the gym until you have done the series of events that you are supposed to
the potion is in the pharmacy in cianwood city
In Blackthorn City.
Clair is in Blackthorn City, you can battle her straightaway
if you you meant after you beat her,go to the dragons den on the back of the gym.you need surf and whirlpool.you have to past the test the master tell you(clairs grandfather).
you must beat the 8th gym leader and she will grant you passage to dragons den
use a garchomp that you could trade from a sinnoh game (platinum, diamond, or pearl) i used a lvl 53 and kicked they're butts.
you need to beat the 8th gym leader in blackthorn city. glad to be of service.
8th gym leader
just defeat blue, the 8th gym leader
u will find him on Cinnabar Island near the northern side. But he won't battle you until you beat Blaine over at Seafoam Islands. hen go talk to him and he will return to his gym where you can then battle him.
Beat the 8th Gym leader.
you beat the gym leader