Number of miles (4163 kilometers) between Australia and New Zealand. That’s farther than San Francisco is from New York City. Although many imagine that the two countries are side-by-side, they are separated by the vast Tasman Sea (after which the island of Tasmania is named). The two countries have very little in common climatically, geologically, viticulturally—or even culturally. As many are aware, the leading grape variety in Australia is shiraz; in New Zealand, sauvignon blanc.