Route 27 is at Route 27........ Its called look it up on your map.
Route 27 is east of New Bark Town. It requires surf to traverse.
it comes right after route 27 its past tojo falls and you go on it when you go fight the elite four
Route 30.
Dragon Claw (TM02) is found in route 27 and in Goldenrod Department Store lottery.
Route 45
pokewalker route
route 38
route 44
Between Mahogany Town and Lake of Rage.
Get a Chinchou, and evolve it. I'm not sure how you evolve Chinchou, but you can find them on route 27 if you go fishing with a super rod.
On route 27 As a swarm when surfing (it's at Lv.20)At all times (morning, day, and night)
Route 44.