| Highlighted : Current records |
| Date | Rider | Place | Manufacturer, Model | Class | Mph | Km/h |
|---|---|---|---|---|---|---|
| 2006-09-04 | Andrew EDWARDS | Bonneville Salt Flats - USA | Aprilia RS 250 | I.A1.B I.2 250cc | 1 km: 163.624 mph Mile: 163.618 mph | 1 km: 263.328 km/h Mile: 263.318 km/h |
| 1991-10-06 | H. LOOMAN | Elvington - GBR | Yamaha | I.A1.B I.2 250cc | Mile: 138.233 mph | Mile: 222.465 km/h |
| 1991-10-05 | H. LOOMAN | Elvington - GBR | Yamaha | I.A1.B I.2 250cc | 1 km: 140.679 mph | 1 km: 226.401 km/h |
| 1986-06-05 | I. SWINDELLS | Elvington - GBR | Rotax | I.A1.B I.2 250cc | 1 km: 135.984 mph | 1 km: 218.845 km/h |
| Highlighted : Current records |