What may be the longest bike path in the world is in the works – stretching the entire length of the Eastern United States coast, from Calais, Maine to Key West, Florida. style=”display:inline-block;width:300px;height:250px” data-ad-client=”ca-pub-8420654331411867″ data-ad-slot=”1313712966″> Since 1991, the East Coast Greenway Alliance has been working on plans for the 2,900 mile-long Greenway bike path. It would…