| Class | Description | Record | Date | Holder | Car | CC |
|---|---|---|---|---|---|---|
| 999 | Not in Start List | 0 | 01/01/2017 | NA | NA | 0 |
| 10 | Ferrari Cars - Ferrari Owners Club | 62.49 | 10/05/2025 | David Snelson | Ferrari 488 Spider | 3900 |
| 6B | Sports Racing & Racing Cars manufactured up to 1971 inclusive | 58.05 | 24/08/2024 | David Tatham | McLaren M12C | 7600 |
| A1 | Road cars - series production up to 2000cc | 63.51 | 02/07/2023 | David Leach | Lotus Elise S1 | 1796 |
| A2 | Road cars - series production over 2000cc | 62.29 | 02/07/2023 | Robbie Birrell | Porsche Cayman GTS | 2500T |
| B | Road cars - specialist production | 59.74 | 03/07/2011 | David Warburton | Caterham 7 | 1800 |
| C1 | Modified cars - series production 2WD up to 1400cc | 62.54 | 02/07/2023 | Gavin Neate | Peugeot 106 | 1360 |
| C3 | Modified cars - series production 2WD over 2000cc | 60.68 | 07/07/2019 | Richard Hargreaves | Ford Escirt Mk2 | 2600 |
| C4 | Modified cars - series production 4WD of any engine capacity | 56.37 | 03/07/2022 | Damien Bradley | Subaru Legacy GL | 2350T |
| F | Sports Libre Cars up to 2000cc | 54.34 | 08/07/2007 | Ed Hollier | OMS SC1 | 1585 |
| G | Sports Libre Cars over 2000cc | 52.98 | 02/07/2006 | Matthew Harrison | SPA 04 | 3500 |
| H | Racing Cars up to 600cc | 56.71 | 04/07/2010 | Mark Goodyear | OMS Hornet | 600 |
| I | Racing Cars over 600cc up to 1100cc | 48.58 | 07/07/2019 | Robert Kenrick | GWR Raptor 2 | 1024 |
| J1 | Formula Ford Racing Cars up to 1600 manufactured before 1994 | 59.65 | 08/07/2018 | Rob Spedding | Vector TF93K | 1600 |
| J2 | Racing Cars over 1100cc up to 1600cc | 48.59 | 08/07/2018 | Richard Spedding | GWR Raptor | 1598 |
| K1 | Racing Cars over 1600cc up to 2000cc (normally aspirated engines) | 49.97 | 03/07/2022 | Johnathen Varley | GWR Predator | 1998 |
| K2 | Racing Cars over 1600cc up to 2000cc (forced induction engines) | 48.71 | 07/07/2019 | Richard Spedding | GWR Raptor 2 | 1340S |
| L | Racing Cars over 2000cc | 47.53 | 08/05/2022 | Wallace Menzies | Gould GR59 | 3300 |