You can travel long distances quickly if you have explored an area. Try this:
  1. Pause the game.
  2. Turn CAPS-LOCK on.
  3. Push the mouse to the edge of the screen so that it moves. Move it somewhere you want to go.
  4. Cast Wizard's Sight (Is that what it's called?) twice in the same place. This will make the area "explored".
  5. Drag one of your teleporter pyramids into this area. You need line of sight between here and your character (ie. if the castle is in the way, it won't work.) Try moving the mouse around a bit if you get a red cross.
  6. Before releasing the mouse button, unpause the game.
  7. Wait up to 20 seconds for the pyramid to land.
  8. Teleport with the other teleporter pyramid.
  9. Press CAPS-LOCK again to lock the camera to your character.

You need a good knowledge of the map for this to work, but it might be what you want.