After beating Crasher Wake , you should head back to Veilstone City’s pastoria? —wait, for Pokémon Platinum/Diamond/Pearl , the next stop is Route 213 and Pastoria City , where you can continue the story and challenge the Pastoria Gym.

What to do next

  • Leave Crasher Wake’s gym in Pastoria City.
  • Go through Route 213 to progress the story.
  • Head toward the next objective in the Great Marsh / Pastoria area , depending on how far your story has advanced.

If you’re stuck

After Wake, the game usually nudges you to:

  1. Explore around Pastoria City.
  2. Continue to the next route area.
  3. Follow the story events that unlock the next badge path.

One important note

Your query mentions Crasher Wake , which is from Pokémon , but the search results available to me mostly surfaced unrelated Crash Bandicoot pages, so I answered based on the likely Pokémon context.

TL;DR: Go to Route 213 and continue toward the next story area in Pastoria City.