Speedway is a town in Wayne Township, Marion County, Indiana, United States. The population was 11,812 at the 2010 U.S. Census. Speedway, which is an enclave of Indianapolis, is the home of the Indianapolis Motor Speedway.
Speedway was laid out in 1912 as a residential suburb. It took its name from the Indianapolis Motor Speedway. It is an early example of a residential community planned for the industrial plants located nearby. Carl G. Fisher, James A. Allison, Frank Wheeler, and Arthur Newby, founders of the Indianapolis Motor Speedway, planned the suburb of Speedway west of the track. Fisher and Allison owned plants that needed workers, the Prest-O-Lite factory and Allison Engine Company. The investors' goal was to create a city without horses, where residents would drive automobiles, as well as participate in creating mechanical parts for new modes of transportation.
The Speedway Historic District was listed on the National Register of Historic Places in 2005.
Speedway is located at 39°47′31″N 86°15′0″W (39.791943, −86.249988).
According to the 2010 census, Speedway has a total area of 4.768 square miles (12.35 km2), of which 4.76 square miles (12.33 km2) (or 99.83%) is land and 0.008 square miles (0.02 km2) (or 0.17%) is water.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Speedway has a humid subtropical climate, Cfa on climate maps.