Grundy County Speedway opened on 30 May 1971 after the Mazon Speed Bowl closed.
Grundy County Speedway
United States
Streckenlayout: Main Oval
- Land
- United States
Streckenfakten & Geschichte
Grundy County was selected to host its first USAC Mopar National Midget race in July 2011.
The 64th Bettenhausen Memorial drew 30 entries to Grundy County Speedway in 2025.
