you can re battle some of them.
For instance Sabrina, if you go on the ship from olivane again she 'll be on the dock.
talk to her and she'll give you her number.
call her when she says and shell battle you,
you can do the same with some of the other gym leaders
hope this helped.
No, you don't. You cannot face the Sinnoh Gym Leaders in HeartGold.
You go around map. beat the gym leaders and collect pokemon. battle other people and level and evolve your pokemon.
No, unfortunately ;_; The only games that you can Re-Battle Gym Leaders on is Platinum, HeartGold, and SoulSilver
Beat the rest of the gym leaders first.
well you cant battle them again but in another Pokemon game you can and they are easy to beat and after you beat them you get like 6586 dollars cool huh?
different places
You cannot travel to the Hoenn region in Pokemon Heartgold and Soulsilver.
to battle Blue in Pokemon Heartgold you must defeat the 7th gym leader, then find him on cinnabar island. Talk to him, then he will go back to his gym for you to fight
You have to beat all of the gym leaders in Johto then look at the map.
You defeat them by training against wild Pokemon.
No, but you can challenge kanto gyms
you can't battle any of the gym leaders anymore.