Indy 500 Career Stats - Len Duncan
| Starts | Total Laps | Best Start | Best Finish | Top 5 | Top 10 | Races Led | Laps Led | Winnings |
| 1 | 101 | 26 | 31 | - | - | - | - | $ 2,875 |
| Year | Finish | Start | Car # | Car Name/Entrant* | C/E/T | Qual Speed | Run/Out | Laps | Led | Winnings |
| 1954 | 31 | 26 | 33 | Brady | Schroeder / Offy / Firestone | 139.210 | Brake cylinder | 101 | 0 | $2,875 |










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