The 100-Mile Wilderness (Hundred-Mile Wilderness, or 100MW) of the Appalachian Trail is some of the most difficult miles to hike along the entire route. It is a very remote section of the trail and is very difficult to resupply. It is recommended that you carry at least 10 days worth of supplies to attempt this section of the trail. The trail goes from Monson to the Baxter State Park boundary. Don’t bother bringing your cell phone, unless you’re using it to take pictures or swat blackflies.
Location: Appalachian Trail, Maine
Distance: 99.4 miles
Peak elevation: 18,500′
Adventure Length: 5-12 days depending on ability
Paved road crossings: None
Topography: rivers, streams, lakes, bogs, mountains, forests
How to Hike the 100 Mile Wilderness – Thorough article from Section Hiker by Philip Werner including what to bring, when to go, emergency plans and more.
100 Mile Wilderness Adventures and Outfitters – Great resource page with lots of information about hiking the 100MW.
Appalachian Trail: 100-Mile Wilderness – From Backpacker Magazine this page details a map and detailed waypoints.
Exploring Maine’s 100-Mile Wilderness – Excellent article by Carey Kish, veteran hiker and 2x AT thru-hiker about the region and history behind it.