Remember the furthest point (i.e. the antipode) is likely to be in the ocean somewhere, so when considering which point is the farthest away, you need to really look at cities.
And so, the furthest city away from Sheffield appears to be Dunedin, the second-largest city in the South Island of New Zealand (after Christchurch), and the principal city of the Otago region, and is 18,994km away.
Known as the Edinburgh of New Zealand, Dunedin wears its Scottish heritage with pride. Surrounded by dramatic hills and at the foot of a long, picturesque harbour, Dunedin is one of the best-preserved Victorian and Edwardian cities in the Southern Hemisphere.
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