PORSCHE RACING HISTORYMargie Smith-Haas (USA)
1980
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 914/4 | GTU | Paul Hass (USA)/Margie Smith-Haas (USA)/Jeff Scott (USA) | Personalized Porsche (USA) | 26th | 9th | 48th | 130 laps |