Need to be more specific which "route 18" you're referring to, where you're trying to get to it from, and also which point you want to intersect with that route. If I were leaving from Colorado to get to US Route 18, I'd go a much different way if I were trying to intersect with it in Wyoming than I would if I were trying to intersect with it in Wisconsin.
Route 66 - 1960 How Much a Pound Is Albatross 2-18 was released on: USA: 9 February 1962
En route vers la Suisse - 1908 was released on: USA: 18 January 1908
You can't find Audino in Pokemon Diamond. You can only find it in Pokemon Black and/or White (Well so far you can only catch it in them)! To catch Audino in Pokemon Black/White, you have to go to either: route 18, route 1, P2 Laboratory, route 2, Dreamyard, route 3, Pinwheel forest, route 5, route 6, Cold Storage, route 7, Dragonspiral Tower, route 9, route 10, route 11, Village bridge, route 12, Giant Chasm, Route 13, route 14, Abundant Shrine, route 15, route 16 or Lostlorn Forest.
Wheel of Fortune - 1983 Route 66 1 24-71 was released on: USA: 18 December 2006
Route 66 - 1960 The Thin White Line 2-11 was released on: USA: 8 December 1961
it is not on route 18
walk
Surf left from Route 1 near Nuvema Town, go through Route 17 and you will find Route 18.
You can't get past route 18 because there's nothing past it.
Surf west of route 17.
You get HM waterfall in route 18 which is west of route 17 and route 1
On Route 18. Route 18 is just off Route 1 and on this route you will find one of the Seven Sages. In the same veiw you will be able to see an item in veiw, it is HM Waterfall. :)
On Route 13 by someone or Route 18.
The Melon Route was created on 2006-07-18.
Route 18. Far West of the route.
you get waterfall on route 18 after you get surf, route 18 is the water next to route 1,you just a little bit btill u hit land then you search for it
Close to home. Use Surf at route 1, go to the island and head west. You'll find route 17 and 18 past the gate.