Fourth Connecticut Lake Trail

The Connecticut is New England's longest river, running more than 400 miles from the Canadian border to Long Island Sound, forming the entire boundary between New Hampshire and Vermont along the way and passing through Massachusetts and Connecticut before reaching the sea. All of that begins here, at the Fourth Connecticut Lake.

The lake is really a small bog pond, a few acres of dark water and floating vegetation held in a hollow near the height of land. Water seeps from it and gathers into a trickle, then a brook, then the chain of larger Connecticut Lakes downstream, and finally the broad river itself. Standing at the source, you can straddle the very beginning of something vast.

The hike is short, roughly a mile and a half round trip, but it is genuinely rugged, climbing steeply over roots and rock and often through mud. Much of the route follows the boundary swath, the cleared strip that runs along the US-Canada line, so that for part of the walk you are quite literally hiking the edge of the country.

Because the trailhead is at the customs station, the hike carries an unusual sense of occasion, beginning where the nation ends. The Nature Conservancy maintains the preserve and asks hikers to stay on the marked path to protect the delicate bog and boundary environment.

Pittsburg is by far the largest town by area in New Hampshire, an enormous, thinly settled expanse of forest, lakes, and rivers that fills the state's northern tip. This is the deep Great North Woods, moose country, prized by anglers, paddlers, hunters, and snowmobilers, and dark enough at night for brilliant stars.

The chain of Connecticut Lakes strung along Route 3 leads travelers north toward this final pond, each lake more remote than the last. Reaching the Fourth Lake caps a journey into some of the wildest and least visited country in the Northeast, a fitting place to find the quiet birth of a mighty river.

The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.

The Fourth Connecticut Lake Trail, at the very top of New Hampshire on the Canadian border near Pittsburg, leads to a small, remote pond that is the ultimate source of the mighty Connecticut River, the longest river in New England. This tiny, high alpine bog pond, tucked into the forest right on the international boundary, is where the great river begins its journey to the sea, and the trail to reach it follows the actual United States and Canada border swath through the woods. A remote and special destination for the adventurous, it marks the humble beginning of a major river. With its border-line trail and river source, the Fourth Connecticut Lake Trail offers a unique destination in New Hampshire.

The Fourth Connecticut Lake is special because this small, remote pond, high in the forest right on the Canadian border, is the ultimate source of the Connecticut River, the longest river in New England, which flows from here hundreds of miles to the sea. Reaching it means hiking a trail that follows the cleared swath marking the actual United States and Canada international boundary, a rare and memorable experience. The tiny pond's role as the headwaters of such a great river gives it outsized significance. This distinction makes the Fourth Connecticut Lake Trail a unique destination at the very top of New Hampshire.

The Fourth Connecticut Lake Trail is short but steep, rugged, and often wet and muddy, climbing through the forest along the international border to the remote pond, so sturdy waterproof footwear, water, and reasonable fitness help. Because it is remote and in wild North Country terrain near the border, being prepared, carrying essentials, and letting someone know your plans are wise. The trail starts near the border crossing station, so respecting all border rules and signage is important. Coming prepared for the steep, wet terrain ensures a safe hike on the Fourth Connecticut Lake Trail in New Hampshire.

The warm, snow-free months of late spring through fall offer the best conditions for the steep, wet trail, with summer providing the most reliable footing and fall bringing beautiful North Woods foliage to this remote region, though the high trail can hold snow and mud late and early. Bringing layers and insect repellent is wise, as the North Country can be cool and buggy. For the best and safest trail conditions, aim for summer through early fall on the Fourth Connecticut Lake Trail near Pittsburg, New Hampshire.

The Fourth Connecticut Lake Trail is at the Canadian border near Pittsburg in the Great North Woods of New Hampshire, within reach of the Connecticut Lakes chain, Lake Francis State Park, Dixville Notch and Table Rock, and the remote North Country wilderness. That makes the Fourth Connecticut Lake Trail a unique stop to combine with Lake Francis State Park, the Connecticut Lakes, and the other attractions of the Great North Woods on a visit to New Hampshire.