It is one of the Blue-Blazed Trails maintained by the Connecticut Forest and Park Association, the Narragansett Council, and the Rhode Island chapter of Scouts BSA.

Running along the Connecticut-Rhode Island border, the trail passes through the towns of Ledyard, Voluntown, and North Stonington in eastern Connecticut, as well as the Lantern Hill section of the Mashantucket Pequot Reservation, the Groton Sportsman Club, the Nature Conservancy's Gladys Foster Preserve, the Pachaug State Forest Green Falls Pond area, and the Rhode Island Scouts BSA Narragansett Council Camp Yawgoog reservation property.

The Narragansett Trail connects to public recreation areas maintained by the Connecticut Department of Environmental Protection at Green Falls Pond and Wyassup Lake in Pachaug State Forest.

Much of the Narragansett Trail is flat or has gradual ascents and descents, making it suitable for casual walking or hiking, running, or snowshoeing in the winter.

The trail's highest uphill grade comes when it crosses a closed section of Flat Rock Road.

The Narragansett Trail crosses streams and wetland areas that are subject to flooding in periods of significant rain and snow melt.

It passes through the North Stonington dog pound and waste transfer station property before crossing Wintechog Road.

The trail continues to Yawbux Brook and an unnamed beaver pond before entering Pachaug State Forest.

From the Lake Wyassup boat launch, the trail climbs to the High Ledge plateau and then to the Legend Woods/Pendleton Hill area before crossing Connecticut Route 49.

Next, the trail travels north-east through the private hunting and fishing preserve of the Groton Sportsmen Club (this Narragansett Trail section is closed from October to March according to posted signs), re-enters the Pachaug State Forest at Tom Wheeler Road and follows the Green Fall River (and ravine) north to Green Fall Pond.

At the border, the trail turns 90 degrees to head south over a rock ridge housing a cave.

The most prominent features are Lantern Hill and the High Ledge plateau, rocks, and small caves.

The Pachaug State Forest Green Falls Pond area features mature growths of hardwood and evergreens.

Members of the recognized tribe continue to live in areas of eastern Connecticut near the current border with Rhode Island.

Snow and ice formations along exposed ledges and summits are common in the winter and may necessitate the use of snowshoes and special equipment.

Hiking through property owned by Groton Rod and Gun Club, the trail that runs between Route 49 and Tom Wheeler Rd., is prohibited.

Biting insects such as parasitic deer ticks (which are known to carry Lyme disease) are a potential hazard, as are encounters with small wildlife.

There are sections filled with stones and other evidence of erosion that has occurred when the trail turns into a temporary stream.

There is a State of Connecticut Department of Environmental Protection letterbox hidden close to the trail on the High Ledge plateau.