The Northern Lights Express (NLX) is a planned higher-speed rail service that would run 155 miles (249 km) between Minneapolis and Duluth primarily in the U.S. state of Minnesota. A portion of the proposed line would run through neighboring Wisconsin to serve Duluth's "Twin Port" of Superior. Plans are to upgrade an existing BNSF Railway freight line to allow trains to travel at up to 90 miles per hour (145 km/h). The train service is said to provide an alternative to traveling Interstate 35 between Duluth and the Twin Cities or to other destinations along the line such as the casino in Hinckley.