The track length of the speedway is disputed by the two great series that take place here. The IRL uses a track length of 1.52 miles (which is 2.45 km) for timing and scoring whereas, the NASCAR series use a track length of 1.50 miles (which is 2.41 km) for the same purpose.
The Chicagoland Speedway is a tri-oval speedway with a length of 2.4 kilometres, located in Joliet, Illinois,the southwest of Chicago, adjacent to Route 66 Raceway. It is owned and operated by the International Speedway Corporation. The speedway was opened in July 2001 and has hosted the Indycar Series till 2011. It also hosts the NASCAR Cup Series including the opening event Chase for the Championship. The Speedway has hosted many important events such as the Monster Energy NASCAR Cup Series, NASCAR Xfinity Series, and NASCAR Camping World Truck Series.
The IROC (International Race of Champions) was hosted by the speedway in 2002 and 2003.
The Owens Corning Atticat 300 (2011-15) and Drive for Safety 300 (2001- present) of the NASCAR Xfinity Series has also been conducted on this speedway.
The Speedway has been hosting the American Ethanol E15 225 of the NASCAR Camping World Truck Series since 2009.
It also hosts the Scott 150 of the ARCA Racing Series (since 2001).
The USAC Silver Crown Series took place on the speedway in the years 2006 and 2007.
The Chicagoland Speedway has been hosting the Tales of the Turtles 400 of the Monster Energy NASCAR Cup Series since 2001.