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This is a duplicate of a question I posted at Stack Overflow: http://stackoverflow.com/questions/10760845/contiguous-regions-in-web-map-services.

I'm working on an application that must calculate routes through South America, specially between Brazil and Colombia. I've found that Google Maps does not consider the hole continent contiguous: Venezuela, Colombia and the Guianas are "closed" for routes that crosses their borders, although it's possible to calculate routes within these countries.

This picture from Wikipedia shows an analysis for contiguous regions in Google Maps, and this blog post compares Google and Bing Maps capabilities.

How this analysis could be duplicated to other web map services? So far, Bing and Yahoo!, Nokia Maps seems very connected, except from Colombia to Panama.

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The (Vector) Data is not captured so this is not available in any commercial product. openstreetmap.org/… is community based - it is just a region that is remote and not likely to be updated anytime soon. – Mapperz♦ May 30 '12 at 16:02

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