> i need to Know exactly which path it is giving shortest or longest path

I guess we're talking about GDirections here?  Or something else??

I think you can be very, very sure GDirections does not return the
longest path.  It would be very difficult to work out the longest
path, unless you had some limit on how many times you were allowed to
drive around a continent or something.

I believe GDirections attempts to return the quickest path, based on
what it knows about average road speeds etc.
  
http://groups.google.com/group/Google-Maps-API/browse_thread/thread/2b64b7181c7bd4e1
Quickest is often, but not always, shortest too.  There's no way to
force it to return shortest.

GDirections is not available in every part of the world.

cheers, Ross K
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