The U.S. has bilateral extradition agreements with 107 countries. Here are all of the places Snowden could still go.
Advice for future Edward Snowdens: You can't cross the Atlantic or Pacific Oceans without running into a US extradition treaty.
In the map above, we've shown all possible international routes one can travel between countries that don't have a formal agreement with the United States for extraditing accused criminals. Flying from Moscow to Kiev is fine, but think twice before traveling on to Berlin; the German government signed an extradition treaty with the US in 1978.
Of course, these details haven't stopped Snowden, who flew to Hong Kong with top-secret details of US surveillance programs even though the city-state has had an extradition treaty with the US since 1996. Now in Russia, Snowden is thought to be bound for Ecuador, which has a US extradition treaty--first agreed to in 1872--but is friendly to political asylum claims.
For the rest of the story: http://www.theatlantic.com/international/archive/2013/06/a-map-of-all-the-flights-snowden-could-take-without-being-extradited/277205/