The Old Croton Aqueduct State Historic Park follows the route of the Old Croton Aqueduct, which carried water to New York City from 1842 to 1955. Most of the structure lies beneath the trail and has been designated a National Historic Landmark. The aqueduct itself remains intact; the northern sections continue to supply water to Ossining.
The trail offers an enjoyable, level 22-mile route from the New Croton Dam in northern Westchester County to Yonkers, just north of New York City. While primarily a walking path, parts of the trail are suitable for horseback riding, biking (mountain bikes are recommended), and cross-country skiing. Cyclists should avoid the trail after heavy rains and during the mud season to reduce erosion.
Panoramas of the Hudson River are visible, particularly in Yonkers and Hastings. Many historical homes, two nature preserves, and a museum in Ossining highlighting the construction of the Aqueduct are immediate neighbors. The trail passes through 11 communities and is accessible from Metro-North Hudson Line trains and bus services along Route 9.
At its southern end, travelers can connect to the South County Trailway, a paved trail offering nearly 15 more miles of adventure from Yonkers to Mount Pleasant.
Parking is available on local streets and several municipal parking lots along the trail route.