Roy Smith at Ontario Motor Speedway
Roy Smith has made 4 NASCAR Cup Series starts at Ontario Motor Speedway since 1975, with 0 wins, 0 top-10s and an average finish of 31.0.
Totals at Ontario Motor Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 4 | 0 | 0 | 0 | 0 | 31 | 21.5 | 21 |
Every start at Ontario Motor Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| November 15, 1980 | 1980 Los Angeles Times 500 | Winston Cup Series | 13 | 36 | 0 | Valve |
| November 18, 1979 | 1979 Los Angeles Times 500 | Winston Cup Series | 30 | 21 | 0 | Running |
| November 21, 1976 | 1976 Los Angeles Times 500 | Winston Cup Series | 25 | 38 | 0 | Engine |
| November 23, 1975 | 1975 Los Angeles Times 500 | Winston Cup Series | 18 | 29 | 0 | Suspension |