Where is a good place to train a Zweilous?

Question

I've been training a Zweilous to get a Hydreigon, and it is Level 56, so I'm getting close to level 64, when it evolves. I've found that the E4 are starting to give out lower amounts of Experience Points (usually about 700 - 1,100), the Nimbasa City Sports Domes aren't working either.

So, if there is a better place to train than those two, let me know :D

Answer 1

Here is your answer or if you want Ev train your Zweilous click here

Answer 2

I suggest around victory road

Answer 3

Give it lucky egg must have crunch and fight lots of psychic and ghost type Pokemon
If u want just go to dreamyard ok