Thornton Lakes Trail (northeast section) is a 2.76-mile out-and-back foot trail in North Cascades National Park, Washington. It climbs 536 ft to a high point of 5,006 ft. Difficulty: moderate, from the NPS hiking-rating formula.
Open Thornton Lakes Trail (northeast section) on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for North Cascades. North Cascades has permits or reservations for some areas: see the North Cascades page for what's needed.