What are all of the pokewalker locations on Pokemon soul silver?

There are no Pokewalker locations in Pokemon SoulSilver.

The Pokewalker was a separate device that was released alongside Pokemon HeartGold and SoulSilver. It was not integrated into the main games themselves.

You could connect the Pokewalker to your game to transfer Pokemon between the two, and the Pokewalker itself had its own gameplay, allowing you to catch Pokemon and level them up separately from the main game.