Constructed near Mansfield, OH in 1962 by Les Griebling and several prominent local businessmen, Mid-Ohio originally featured a 2.4 mile, 15 turn layout consisting of a blend of fast, medium and slow speed corners, one long straightaway and several dramatic elevation changes. Although the track was updated over the years, Jim Trueman (founder of the Red Roof Inn motel chain and TrueSports Racing) thoroughly modernized the facility after acquiring the track in 1982. In addition to a new garage, paddock and operations tower, the update tweaked the track layout by by-passing the Keyhole chicane, resulting in an optional 2.25 mile, 13 turn circuit.
- Source: iRacing.com