NASA - 2012 Transit of Venus - Global Map

For Northern Hemisphere locations above latitude ~67° north, all of the transit is visible regardless of the longitude. Northern Canada and all of Alaska will also see the entire event.

Residents of Iceland are in a unique wedge-shaped part of the path (Region X in Figure 1).

They will see both the start and end of the transit but the Sun will set for a short period around greatest transit. A similarly shaped region exists south of Australia (Region Y in Figure 1), but here, the Sun rises after the transit begins and sets before the event ends.

NASA - 2012 Transit of Venus