| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| HB start west | 5.44 km | 80.2° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.43 km |
| Oxford M40 Services | 76.96 km | 179.1° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Northampton South | 51.47 km | 15.4° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Winchcombe | 76.69 km | 251.8° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB control point east | 89.83 km | 53.7° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB East | 9.76 km | 270.9° | Line 1.00 km (Radius 0.50 km) |
| Total: | 304.71 km | ||