Connecting People and Landscapes Across Ten National Historic Trails

National Trails Intermountain Region (NTIR) works to protect, develop, and promote long-distance historic trails that played key roles in America’s exploration, migration, trade, warfare, and cultural exchange. NTIR administers 10 National Historic Trails across over 28,000 miles and 24 states. 
 

Contact Us
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Have questions? Need assistance? Reach out to National Trails Intermountain Region!
Explore Our Trails
A map of the United States depicting 10 trails and Route 66 traversing across many states.
National historic trails, NTIR's 10 trails, and how trails share America's heritage.
Work with NTIR
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Join the effort to protect, develop, and promote the trails!
Products We Offer
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Site plans, interpretive media, GIS data, signage, certification, and more!
Services We Provide
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Planning, research, outreach, resource protection, mapping, and additional resources.

Last updated: November 2, 2026

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