How do you get to [b]Eterna City[/b] after beating [b]Oreburgh[/b]'s gym..

After you defeat the Oreburgh Gym, head back to Jubilife City. After you do this, head north to Floaroma Town. After you defeat Team Galactic at Valley Windworks, head north to Eterna Forest. Make your way through Eterna Forest, and you'll come out near Eterna City.

Hope this helps!

After beating Leader Roark you have to go back to Jubilife City and head to Floaroma Town which leads to Eterna City.

How 2 get 2 Eterna City from Oreburgh
1. After you defeat Roark, go back through Oreburgh Gate and to Jubilife City.
2. Head North to the Ravaged Path and use HM06 rock smash to break the rocks.
3. Continue to Floarama Town and go to the Valley Windworks after picking up the galactic key to solve the issue there.
4. After that, head north to the route that goes to Eterna Forest battle the trainers and then move into Eterna Forest.
5. A woman named Cheryl will want to be led out of the forest. Accept and move through the forest and when you've reached the end, she will leave you.
6. Move out of the forest and there will be a short route which will then have Eterna City right next to it.
After you get HM01 cut you'll be able to chop down the trees and take a shortcut instead of having to go through the forest.
Hope this helped :-)