Please note: The below description is based on reaching Glen Ellis Falls from Pinkham Notch Visitor Center via the Lost Pond Trail and returning the same way. The falls can also be accessed from the Glen Ellis Falls parking area or via the longer more challenging Direttissima Trail (also starting at Pinkham Notch Visitor Center).
Estimated Time: 2-3 hours round-trip
Distance: 2.4 miles round-trip
Glen Ellis Falls is a wonderful (and popular) destination in Pinkham Notch and makes for a great addition to a hike to Lost Pond. The falls themselves are 64 feet tall and quite impressive all year round. There are multiple viewing locations to take advantage of. Be cautious on the rocks around the base of the falls as these can be slippery and therefore dangerous.
While you can reach the falls from the nearby parking area (a parking fee is charged here) an arguably nicer option is to start at Pinkham Notch Visitor Center and hike out past Lost Pond. The far end of the pond features many small beaver dams and large boulders, which can be fun to explore. After 0.9 miles from the trailhead, you will reach the Wildcat Ridge Trail. Turn right at this junction and continue approximately 0.1 miles to the Ellis River. During the summer and fall this river crossing is very manageable. Use extreme caution, however, during the spring melt and after heavy rains as the water levels will make this crossing dangerous.
After crossing the Ellis River, turn left along the bank. You will climb over a stone wall and here will join the well-maintained path down to the base of the falls. To return to Pinkham Notch Visitor Center, the easiest option is to retrace your steps. For a longer more strenuous route option, use the tunnel to travel under Route 16 to the Glen Ellis Falls parking lot. From here, follow the Glen Boulder Trail 0.4 miles up a steep uphill. At the top of the climb, turn right on the Direttissima Trail, which in 1 mile will take you back to the Visitor Center. Alternatively, you can reverse this loop, starting on the Direttissima Trail and returning on the Lost Pond Trail, which makes for a less steep climb.