The Northstar Line (reporting mark MNRX) is a commuter rail route in the US state of Minnesota. Northstar runs 40 miles (64 km) from Big Lake to downtown Minneapolis at Target Field using existing track and right-of-way owned by the BNSF Railway. Passenger service began on November 16, 2009. The rail line serves part of the Northstar Corridor between Minneapolis and St. Cloud. Planning for the line began in 1997 when the Northstar Corridor Development Authority (NCDA) was formed.