Broadway from the Battery to the Bronx is a 3.2 mile point-to-point trail located near New York, New York and is good for all skill levels. The trail is primarily used for hiking, walking, and horses and is accessible year-round. Dogs and horses are also able to use this trail.
Manhattan Waterfront Greenway (MWG) loops around the waterfront of Manhattan.
The "Broadway from the Battery to the Bronx" is half the distance of the hike I'm going to describe which is about 28 miles. I walked the island clock-wise starting at the 79th street boat basin at 6:30am walking north to Washington Heights aka Heights on the Hudson. The entire MWG trail is blazed with the MWG signs..very easy to follow. Plan to breakfast at the Northern tip of Manhattan just after 9am. Turning South, follow the trail by the Harlem River, you'll be on the Harlem River Speedway for about 1.5 miles where you'll follow the trail though the streets of Harlem eventually joining the water's edge just North of Hell's Gate. Walking South plan to break for lunch around the United Nations or just south. No need to give you restaurant suggestions, there are thousands to choose from. After lunch walking South to the South Street Seaport, Battery Park where you'll want to break for iced coffee and lounge on the grass at Batter Park City at around 3pm. Heading North with the Hudson River on your left you've got about 90 blocks to reach the 79th Street boat basin.
This is a very difficult hike. Your feet will ache from walking on cement for 28 miles but in the end its kind of a fun accomplishment. Carrying food and snacks on this hike is a suggestion you should consider but given this is New York, you can buy anything just about anywhere. We ate in a small deli in the North, Indian by the UN and *Bucks downtown.
You can bike this route 'eaisly' but you'll have to negotiate stairs just after passing the George Washington Bridge.