Map of great-circle distance to the coastline.
<a href="//commons.wikimedia.org/wiki/User:Gaianauta" title="User:Gaianauta">Gaianauta</a>
CC BY-SA 4.0
self-made using the technique described in Garcia-Castellanos, D., &amp; U. Lombardo, 2007. Poles of Inaccessibility: a calculation algorithm for the remotest places on Earth. Scott. Geogr. J., 123, 227-233. Based on the coastline database of Wessel, P. &amp; Smith, W. H. F. (1996) A global self-consistent, hierarchical, high-resolution shoreline database, Journal of Geophysical Research, 101, B4, 8741 – 8743. Lake shores are excluded.