Short course off-road racing

[1] Short course off-road racing became popular during the 1970s, when Mickey Thompson founded the SCORE series.

[2] Differences in rules and regulations resulted in a schism between the West Coast and Midwestern United States, though series like CORR hoped to bridge the gap by racing in the other region.

However, financial troubles and the loss of title sponsor Amsoil caused TORC to shut down after 2017, while the COVID-19 pandemic led to LOORRS being folded in 2020.

[6] However, after the 2013 season, the series began racing predominantly on street circuits, though it has occasionally returned to off-road courses and stadiums such as the Charlotte Motor Speedway dirt track and Lake Elsinore Diamond.

[9] A Western series, Great American Shortcourse, was founded a year later by LOORRS executive Lee Perfect and King of the Hammers organizer Dave Cole.