The Aurora Subdivision or Aurora Sub is a railway line in Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

 and Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

 operated by BNSF Railway

BNSF Railway

The BNSF Railway is a wholly owned subsidiary of Berkshire Hathaway Inc., and is headquartered in Fort Worth, Texas. It is one of seven North American Class I railroads and the second largest freight railroad network in North America, second only to the Union Pacific Railroad, its primary...

. It is part of BNSF's Chicago, Illinois to Seattle, Washington

Seattle, Washington

Seattle is the county seat of King County, Washington. With 608,660 residents as of the 2010 Census, Seattle is the largest city in the Northwestern United States. The Seattle metropolitan area of about 3.4 million inhabitants is the 15th largest metropolitan area in the country...

 Northern Transcon. This segment runs about 262 miles (421.6 km) from the St. Croix Subdivision

St. Croix Subdivision

The St. Croix Subdivision or St. Croix Sub is a rail line operated by the BNSF Railway. It runs approximately 150 miles from La Crosse, Wisconsin to Saint Paul, Minnesota, following the Mississippi River...

 in La Crosse, Wisconsin

La Crosse, Wisconsin

La Crosse is a city in and the county seat of La Crosse County, Wisconsin, United States. The city lies alongside the Mississippi River.The 2011 Census Bureau estimates the city had a population of 52,485...

 to the Chicago Subdivision

Chicago Subdivision

The Chicago Subdivision or Chicago Sub is a railroad line in Illinois that runs about from Chicago to Aurora and hosts Metra's BNSF Railway Line commuter service. It is operated by BNSF Railway as the easternmost part of the railroad's Northern Transcon to Seattle, Washington...

 in Aurora, Illinois

Aurora, Illinois

Aurora is the second most populous city in the U.S. state of Illinois, and the 112th largest city in the United States. A suburb of Chicago, located west of the Loop, its population in 2010 was 197,899. Originally founded within Kane County, Aurora's city limits have expanded greatly over the past...

.

For a time, this track hosted some of the fastest trains in the world, including the Chicago, Burlington and Quincy Railroad

Chicago, Burlington and Quincy Railroad

The Chicago, Burlington and Quincy Railroad was a railroad that operated in the Midwestern United States. Commonly referred to as the Burlington or as the Q, the Burlington Route served a large area, including extensive trackage in the states of Colorado, Illinois, Iowa, Kentucky, Missouri,...

's Twin Cities Zephyr

Twin Cities Zephyr

The Twin Cities Zephyr was a streamlined passenger train service of the Chicago, Burlington and Quincy Railroad . It was the second Zephyr service introduced by CB&Q following the record-setting Denver–Chicago "dawn to dusk dash" of the Pioneer Zephyr trainset...

. The Northern Pacific

Northern Pacific Railway

The Northern Pacific Railway was a railway that operated in the west along the Canadian border of the United States. Construction began in 1870 and the main line opened all the way from the Great Lakes to the Pacific when former president Ulysses S. Grant drove in the final "golden spike" in...

 North Coast Limited

North Coast Limited

The North Coast Limited was a named passenger train operated by the Northern Pacific Railway between Chicago and Seattle via Bismarck, North Dakota...

and Great Northern Empire Builder

Empire Builder

The Empire Builder is a passenger train route operated by Amtrak in the Midwestern and Northwestern United States. It is Amtrak's busiest long-distance route and busiest daily train, carrying more than 500,000 travelers annually since 2007. Overall, it is the railroad's 10th-busiest line. Before...

also ran to Minneapolis–Saint Paul and on to the west coast on this track. However, with the advent of Amtrak

Amtrak

The National Railroad Passenger Corporation, doing business as Amtrak , is a government-owned corporation that was organized on May 1, 1971, to provide intercity passenger train service in the United States. "Amtrak" is a portmanteau of the words "America" and "track". It is headquartered at Union...

 in 1971, the Empire Builder changed its route between Chicago and the Twin Cities to run on the route of the former Milwaukee Road Hiawatha

Twin Cities Hiawatha

The Twin Cities Hiawatha was a named passenger train operated by the Chicago, Milwaukee, St. Paul and Pacific Railroad , and traveled from Chicago to the Twin Cities in Minnesota. The original train takes its name from the epic poem The Song of Hiawatha by Henry Wadsworth Longfellow...

instead.

Today, there is no passenger service on the line. Amtrak trains heading westward along the Chicago Subdivision immediately turn southwest toward Galesburg, Illinois

Galesburg, Illinois

Galesburg is a city in Knox County, Illinois, in the United States. As of the 2010 census, the city population was 32,195. It is the county seat of Knox County....

 along the Mendota Subdivision as the pass through Aurora, but they currently (as of 2010) do not stop in the city. Metra

Metra

Metra is the commuter rail division of the Illinois Regional Transportation Authority. The system serves Chicago and its metropolitan area through 240 stations on 11 different rail lines. Throughout the 21st century, Metra has been the second busiest commuter rail system in the United States by...

 commuter rail service to Chicago via the BNSF Railway Line

BNSF Railway Line

The BNSF Railway Line is a commuter rail line in the United States, provided by Metra and operated by the BNSF Railway in Chicago and its surrounding suburbs...

 terminates at the Aurora Transportation Center, but this is at the end of a spur parallel to the main line. There is an old train station on Broadway (Route 25) about a mile south of the Aurora Transportation Center, but it is disused.