The East Coast Greenway will stretch from Calais, Maine, to Key West, Florida, a 2,900-mile distance. 

The project will provide non-motorized users a unique way to travel up and down the East Coast through 25 cities and 16 states. Walkers, cyclists, runners and other active-transportation users will be able to travel on a continuous, firm and paved greenway with a route specifically designed to give travelers a traffic-free experience, East Coast Greenway Alliance, the non-profit organization behind the project.

"Our route has been chosen to provide the traveler with an ever-changing, interesting and scenic landscape, whether urban, suburban, small town, industrial or rural," the organization states on its website. 

The greenway will provide access to public transportation as well as points of interest encountered along its route.

The alliance has been working on this project since the early 1990s, Seeker reported. It wasn't until last year, though, when the project really picked up some steam. Construction of the greenway relies on local development, giving each state or locality ownership over their stretch of the path. Separate pieces will then be connected to complete the greenway.

So far one third of the greenway has been built.

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