Delaware Water Gap is a water gap on the border of the U.S. states of New Jersey and Pennsylvania where the Delaware River cuts through a large ridge of the Appalachian Mountains.

The Delaware Water Gap is not a "path" you follow, but a massive mountain pass and 70,000-acre National Recreation Area that straddles the Delaware River along the border of New Jersey and Pennsylvania. It is located roughly 75 miles west of New York City and 90 miles north of Philadelphia. The "Gap" itself is a mile-wide chasm carved through the Kittatinny Ridge, separating Mount Tammany in New Jersey from Mount Minsi in Pennsylvania. If you are driving, Interstate 80 passes directly through the New Jersey side of the Gap, while PA Route 611 follows the river on the Pennsylvania side. For hikers, the Appalachian Trail enters the Recreation Area at the I-80 bridge and runs for 28 miles along the ridge. The area "goes" from the town of Delaware Water Gap in the south up 40 miles north to the town of Milford, PA, offering over 100 miles of trails, dozens of waterfalls, and three swimming beaches.