Portland International Raceway - Full Circuit
Seasons 21s1 to 26s1 (21 seasons) — generated March 16, 2026 12:33 UTC
3,255
Total Races
18,222
Unique Drivers
20
Series
Popularity Over Seasons
Series Usage
| # | Series | Races | Unique Drivers | Seasons | Scheduled |
|---|---|---|---|---|---|
| 1 | Ferrari 296 Challenge | 756 | 3,188 | 3 | — |
| 2 | FIA F4 Esports Regional Tour - America | 497 | 2,831 | 3 | — |
| 3 | GT4 Challenge by Falken Tyre | 413 | 3,848 | 2 | — |
| 4 | Production Car Challenge by Sim-Lab | 312 | 2,644 | 2 | — |
| 5 | FIA Formula 4 Challenge - Fixed | 309 | 1,556 | 1 | — |
| 6 | Sports Car Challenge by Falken Tyre | 260 | 2,996 | 2 | — |
| 7 | Advanced Mazda MX-5 Cup by Heusinkveld | 108 | 567 | 1 | — |
| 8 | Indy NXT Road Series - Fixed | 102 | 668 | 1 | — |
| 9 | LMP3 Trophy | 77 | 511 | 2 | — |
| 10 | Motorsport UK FF 1600 Trophy by Thrustmaster | 66 | 297 | 1 | — |
| 11 | INDYCAR Series - Fixed | 55 | 518 | 2 | — |
| 12 | NASCAR O'Reilly Auto Parts Series - Fixed | 52 | 500 | 1 | — |
| 13 | BMW M Power Challenge | 51 | 333 | 3 | — |
| 14 | Rain Master Challenge | 46 | 275 | 3 | — |
| 15 | NASCAR iRacing Class B Series | 32 | 233 | 1 | ✓ |
| 16 | INDYCAR Series | 22 | 189 | 2 | — |
| 17 | IMSA Sportscar Endurance Challenge | 19 | 551 | 2 | — |
| 18 | Skip Barber Race Series | 17 | 102 | 1 | — |
| 19 | US Open Wheel D - USF 2000 Series - Fixed | 12 | 72 | 1 | — |
| 20 | Global Sports Car Challenge by Fanatec | 12 | 72 | 1 | — |