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Interstate 15 is the longest north/south Interstate in the Western United States. It connects San Diego, CA with the Montana/Alberta (Canada) border crossing. Future plans call for Interstate 15 to connect with the San Diego Harbor, about 6 miles south of its current southern terminus. Jump to: Nevada | Arizona | Utah | Distance Chart for Interstate 15
Approximate distance in km (1 km = 0.621 miles) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||