Can I get Aron before the second gym

[Eri]

Ok so I'm having a hard time with the second gym so I was curious if I could get a Aron before the second gym to help and if so how can I get it? All of my team is level 25, said team is made up by a Noibat, Roselia, Braixen and a Bronzor (Probably gonna replace the Bronzor later)

[Duskfang Shadowpaw]

To get Aron you'll need the TMX for Rock Smash and access to the greater Railnet which is after the 6th Gym

 

I could give you an Aron, if you don't want to wait that long