The Cascadia Marine Trail is a 150-mile (240 km) water trail on Puget Sound.^[1]

Created in 1993,^[2] it is designated as one of the 16 National Millennium Trails and suitable for day or multi-day trips. It has over 50 campsites to visit.^[3] People can boat to the campsites from many public and private launch sites or shoreline trailheads. In 1994, it was designated a National Recreation Trail.^[1]