Route 119 is an extremely long north-south route located in central Hoenn. The path, linking Fortree City in the north with Route 118 to the south, is home to the Weather Institute and is one of the few routes with long grass and variable weather conditions. The route is on a four-day weather cycle: rain, thunderstorm, rain, clear. Its weather affects that on Route 123.
It is also home to Feebas, which is extremely difficult to find. The desire to obtain a Milotic, Feebas's evolved form, is what often lures trainers to Route 119.
Do check out this link..its more specified:
http://bulbapedia.bulbagarden.net/wiki/Hoenn_Route_119
On route 119.
Use your pokenav to find it.
Regice: Route 105 Regirock: Route 111 Registeel: Route 119
you can get feebas on route 119 very rare
you can get it by going to route 119 at the tall grass
you can find a feebas in route 118 and 119 but its hard to find
Fortress city and go through route 119
Only in ruby, sapphire and emerald at route 119
In Pokèmon Sapphire, Rare Candies can be found on these routes: Route 106 Route 110 Route 114 Route 119 Route 120 Route 123 and 132. *One of them can also be found in the Trick house ~Lucario
in route 119
There is no Route 226 in Sapphire
I'm not sure if it's the same on Sapphire, but it's on Route 119 right before you get to Fortree City (im playing sapphire, so it might be different)