Big Timber Road is a commuter railroad station in the Kane County portion of Elgin, Illinois, a western suburb of Chicago. The station is the western terminus or Metra's Milwaukee District/West Line. It is 39.8 miles (64.1 km) away from Chicago Union Station, the eastern terminus of the line. When it opened in 1986, the surrounding area mostly consisted of farmland. Since then, numerous residential subdivisions have been built.