Follow the signs along NH Rt. 16 for the Glen Ellis Falls and its parking area in Pinkham Notch. This is the trailhead.
This route leaves Pinkham Notch and ascends past the famous Glen Boulder. The trail starts from the parking area and heads up around a cliff band on the mountain side. You will meet up to intersections with a couple different trails and also you will get some nice views over to Wildcat Mountain from certain points below treeline. The trail then starts to climb up the Gulf of Slides which is one of Mt. Washington's minor ravines on the southeast side.
At 1.6 miles you will reach the Glen Boulder and pop out of treeline with fantastic views west to the Carter Range and views within the Mt. Washington area. From here, the main trail continues over the alpine terrain and over a subpeak known as Slide Peak. Continue hiking until you reach the Davis Path. For the rest of the trip follow the Davis Path and then the Crawford Path to the summit and enjoy the alpine splendor on New England's highest peak. The round-trip distance is 11.4 miles with 4,500 feet of elevation gain.
Comfortable hiking boots, food/water, trekking poles, and a camera.