Janet Guthrie at Ontario Motor Speedway
Janet Guthrie has made 3 NASCAR Cup Series starts at Ontario Motor Speedway since 1976, with 0 wins, 0 top-10s and an average finish of 19.0.
Totals at Ontario Motor Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 3 | 0 | 0 | 0 | 5 | 19 | 17.7 | 13 |
Every start at Ontario Motor Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| November 19, 1978 | 1978 Los Angeles Times 500 | Winston Cup Series | 15 | 13 | 0 | Running |
| November 20, 1977 | 1977 Los Angeles Times 500 | Winston Cup Series | 15 | 24 | 5 | Running |
| November 21, 1976 | 1976 Los Angeles Times 500 | Winston Cup Series | 23 | 20 | 0 | Hub |