South Weeks is a 3,885-foot summit in the Pliny Range, the northern tier of New Hampshire's White Mountains. The range honors Senator John W. Weeks of Lancaster, whose Weeks Act of 1911 established the White Mountain National Forest. The peak sits between Mount Waumbek to the southwest and North Weeks to the northeast, connected by the Kilkenny Ridge Trail that strings all three Weeks summits through a long wooded corridor.
The standard approach begins at the York Pond Trailhead in the Berlin Fish Hatchery (the gate operates approximately 8am to 4pm). The York Pond Trail runs 2.4 miles through mixed forest with several stream crossings before meeting the Kilkenny Ridge Trail, which then traverses North Weeks and Middle Weeks before reaching South Weeks via a short spur — about 12.2 miles round-trip with roughly 2,200 feet of gain. Extending the day to include Waumbek and Starr King turns the route into a full traverse of the northern Pliny Range.
All three Weeks summits are entirely wooded with no views. The Kilkenny Ridge Trail between peaks can be overgrown with hobblebush and ferns, and blowdowns sometimes obscure the path; navigation attention is warranted between Middle and South Weeks. The remote location and less-frequented trail make a GPS track a wise backup, especially for less-experienced navigators.
