Find Countries along a Path 

Get a list of countries that intersect a geodesic line from Santiago de Chile, Chile to Nuuk, Greenland.

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X countries = GeoIdentify["SovereignCountries", GeoPath[{Entity["City", {"Santiago", "Metropolitana", "Chile"}], Entity["City", {"Nuuk", "Sermersooq", "Greenland"}]}]]

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Draw the path and the countries it crosses.

In[2]:=

X GeoGraphics[{GeoPath[{Entity[ "City", {"Santiago", "Metropolitana", "Chile"}], Entity["City", {"Nuuk", "Sermersooq", "Greenland"}]}], PointSize[Large], Point[Entity["City", {"Santiago", "Metropolitana", "Chile"}]], Point[Entity["City", {"Nuuk", "Sermersooq", "Greenland"}]], GeoStyling[Opacity[0.6]], {RandomColor[], Polygon[#]} & /@ countries}, GeoBackground -> "StreetMapNoLabels"]

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