The picture of the Venus Transit shown in the map in the Wikipedia article is somewhat misleading due to the map projection. One can use MICA to determine the subsolar point for midtransit.
Ploting the midtransit subsolar point on a Google map showing the hemisphere where the Sun is visible gives the following result.
This gives a better picture of where the Venus Transit will be visible from. Note that the transit will also be visible from a good portion of the land bordering the Artic Ocean weather permitting. Throughout the transit the declination of the subsolar point is essentially constant and it moves along the same latitude as the Earth rotates.