Route 125 is north of Mosdeep City, just swim north. Basically the only special thing about it is Shoal Cave, where during a low tide you can capture the rare Snorunt.
The safari in Pokemon ruby is located at the right of the route 121, near Lilycove city.
Route 8 is in Kanto. Ruby takes place in Hoenn.
Route 116
it is on route 120
The Day Care in Pokemon Ruby is on the route West of Mauville City.
There's No Such Place Of Route 0 In Ruby/Sapphire/Emerald/FireRed/LeafGreen.
seedot route 203/4 nuzleaf route 229
route 35
route 102
It is in Route 119
route 110
on route 104