International Appalachian Trail (IAT)

A small metal IAT trail sign underneath wooden signage posted on a tree.
Follow the small blue and white rectangular IAT signs to stay on trail.

NPS/Gin Majka

The International Appalachian Trail (IAT)/Sentier International des Appalaches (SIA) runs the length of Katahdin Woods and Waters National Monument and connects remnants of the Appalachian Mountains in Maine to Canada and beyond. The segment of the IAT that passes through the monument meanders through forests, river systems, streams, and areas of important cultural landscapes. Whether you plan to hike a portion of the trail or hike the whole length, you will surely experience the complex biodiversity of Maine's North Woods.

IAT Frequently Asked Questions

  • Q. Where can I start the IAT?
    A. Start at the Barnard Mountain Trailhead parking area located at the southern section of the monument, or at Haskell Gate, located in the northern section of the monument.
  • Q. Where can I camp?
    A. Camping is permitted in designated campsites and campgrounds only. Refer to the Superintendent's Compendium for details. You can make a reservation on or choose to walk-up to available sites. Practice Leave No Trace principles.
  • Q. Is camping allowed on Deasey Mountain?
    A. No. There is no designated campsite on Deasey Mountain. Plan accordingly. Lunksoos Lean-to, Wassataquoik Lean-to, and Wassataquoik Campsite are the closest in proximity to Deasey Mountain. Reserve your site on
  • Q. How long is the IAT?
    A. The IAT covers 26.2 miles within the monument boundaries (from Barnard Mountain Trailhead to North Gate).
  • Q. What is the trail like?
    A. The trail can sometimes be muddy, flooded, rocky, and overgrown in some segments. Check the current conditions and call 207-456-6001 for more detailed information.
  • Q. What can I expect at the Wassataquoik Ford?
    A. The Wassataquoik Ford is a stream crossing. The word stream may be misleading, as the width is more like a river. Read more information on stream crossing safety. The East Branch of the Penobscot River is monitored by the United States Geological Survey. Check the flow rates at Grindstone to understand the current conditions of the stream.

Katahdin Woods and Waters NM does not offer any access points to Baxter State Park.

  • Contact Baxter State Park for any inquiries regarding use and access of Baxter State Park 207-723-5150. TTY: 207-723-4419.
  • Dogs are NOT allowed in Baxter State Park.
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    Tags: iat hiking

    Last updated: April 29, 2024

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