At 2,670 feet above sea-level the small Fourth Connecticut Lake is the beginning of the 410-mile Connecticut River. The trail winds up a hill crisscrossing the Canadian-United States border for much of the hike.

The Fourth Connecticut Lake is a northern glacial tarn, just 2.5 acres in surface area. The mighty Connecticut River is just a small babbling brook as it leaves Fourth Connecticut Lake. It's only about 200 yards from the Canadian border. The 78-acre area is a nature sanctuary preserved by The Nature Conservancy.

This trail is one of few trails in the world that crosses international borders. There are some great windows to look through to the north and see the mountains of our northern neighbor, Canada.

The preserve is densely wooded with fir, spruce, birch, and other species of trees. Woodland wildflowers abound, too.

Here's a video that I made of my hike.

This is a very wild area and as such is sensitive. Respect the pristine natural environment around you. You may encounter moose, deer, beaver, lots birds, and flora on this hike. Enjoy!

The Hike

The trail starts next to the road to the North of the Border Station, about 50 feet from the International border. A large sign is posted by the Nature Conservancy. Follow the trail up the hill. Pay attention to the ground, you'll set over several international border markers. The trail skirts private property, stay on the trail. When you reach the lake you can follow the trail in either direction as it just loops around.

Directions and Parking

Drive north on US 3 in New Hampshire. You'll approach the US Border Station. There are parking spots for hikers on the right. Walk toward the international border where the two flags are standing side by side. Across the street are the signs for the beginning of the trail. Follow the markers.

Pack List

  • Trail Map
  • Water
  • Sturdy shoes or boots
  • Bug Spray
  • No pets
Show More
RT Distance 2 Miles
Elevation Gain 350 Feet
Activities Photography, Hiking
Skill Level Beginner
Season Spring, Summer, Autumn
Trail Type Loop
Features
Easy Parking
Lake
River
Scenic
Wildflowers
Wildlife

Please respect the places you find on The Outbound Collective.

Always practice Leave No Trace ethics on your adventures. Be aware of local regulations and don't damage these amazing places for the sake of a photograph. Learn More

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