It needs to be at level 42 to evolve.
Victory road =]
depending on the level of your lairon you should go to the beginning part of victory road
in victory road
You need to evolve it with a Shiny Stone. This stone is found in Victory Road!
In victory Road. Outside not in a CAVE
There are a few Pokemon you can find in victory road that will evolve those Pokemon are: Golbat, Whismur, Loudred, Aron, Lairon.
you can find him in victory road or evolve a Aron
If you got it on victory road, it wont evolve. But if you got an aron that evolved into a lairon, it will evolve at level 42 or 45
Lairon can be found in victory road.
In Pokémon Sapphire you cannot find Aggron however you can find Aron in Granite Cave and in the Victory Road and then you can evolve it at Level 32 into Lairon and then you can evolve Lairon at Level 42 into Aggron additionally you can find wild Lairon in three areas within Victory Road in Pokémon Sapphire and then you can evolve it into Aggron.
you can get it in victory road.
victory road
Victory road =]
you can fint lairon in the victory road or catch an aron at the granite cave
aron evolves at lv 32 larion evolves at lv 42
Aron evolves into lairon at level 32; or you can find it on victory road (very tough to catch)
victory road but is rare