I'm guessing you mean the cycling road. Well, go through the grassy path up to Mauville and go to the bike shop. You'll get a free bike. And now you can ride! Enjoy!
Mystery road doesn't exist.
Evergrande City.
secound floor on victory road.
Victory road
You dont
In Ever Grande City, after you get through Victory Road.
From Battle Frontier and Victory Road.
you get out of Victory road by using escaperope or a Pokemon that knows dig.
It is in Ever Grande City. Within that,when you see a Pokemon Center there is a cave and that is Victory Road
Gligar is in the grass near cycling road if you insert Pokemon Emerald. In Platinum, the dongle feature is not nessecary.
At the victory road....
Level 36-45.