For the normal single train, the 21st trainer is the subway boss buut on the super single train the subway boss is the 49th trainer
The 8th gym uses ground and fighting type Pokemon such as Rhyhorn and Machoke. You should train up water, grass and flying types for the gym. For grass Pokemon train them fighting the trainers between Cinnibar Island and Pallet Town. Most of the trainers there will be using water Pokemon. For water and flying Pokemon, since you will have beaten the 7th gym by now, you can train on One Island, fighting the wild fire and fighting Pokemon there and also the trainers.
You have to train him like a normal trainer with high level wild pokemon, trainers, and patience
well, it depends. If you train it well, that pokemon wuill bethe best in your pokemon world.BUT I highly suggest you train black kyurem because its stronger than white kyurem.
You either have to train a Pokemon very good (It is easier to fight elite four or trainers.). You could also trade with a friend. Hope this helps!
Train it to level 40.
If you want to you can try the other modes like single or knockout. Not your thing? Train more Pokemon and get all the Pokemon in the pokedex. And meet some other Pokemon leafgreen and Pokemon firered players.
You train it by fighting other trainers or other wild pokemon.
train all your Pokemon equally
soulsilver and heartgold, it has the most trainers
easiest way to train your Pokemon is by batteling each trainers or you can practice with wild Pokemon in the grass,cave,or sea
You can train your Pokemon anywhere. There are many places to find wild Pokemon the appropriate level for your Pokemon. Various Pokemon trainers and gyms will help you along the way.
The 8th gym uses ground and fighting type Pokemon such as Rhyhorn and Machoke. You should train up water, grass and flying types for the gym. For grass Pokemon train them fighting the trainers between Cinnibar Island and Pallet Town. Most of the trainers there will be using water Pokemon. For water and flying Pokemon, since you will have beaten the 7th gym by now, you can train on One Island, fighting the wild fire and fighting Pokemon there and also the trainers.
Well just a little tip if you train you pokemon vs trainers then you will beat them in no time
u train at mauvile city (re-battle the trainers)
train, train and train, keep training dont skip trainers that you dont want to battle, keep training, and trust me you will kill everyone, or buy R4i and you will be able 2 use cheats to kill everyone.
the only place you can train Pokemon without wasting your money would be training by yourself with wild Pokemon and trainers. Im not sure if theres a cheat, probably is though.
Pokemon can be trained and leveled up by battling wild Pokemon and other Pokemon trainers to earn experience points