BNSF Railway (reporting mark BNSF) is one of the largest freight railroads in North America. One of seven North American Class I railroads, BNSF has 35,000 employees, 32,500 miles (52,300 km) of track in 28 states, and nearly 8,000 locomotives. It has three transcontinental routes that provide rail connections between the western and eastern United States. BNSF trains traveled over 169 million miles (272 million kilometers) in 2010, more than any other North American railroad.