| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| HB start north | 5.39 km | 189.0° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.53 km |
| Yattendon | 109.90 km | 186.1° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Devizes | 55.57 km | 258.2° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Aylesbury | 94.24 km | 55.1° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB control point east | 67.39 km | 358.4° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HBX-HB Finish Ring | 10.26 km | 269.9° | Cylinder R=3.00 km |
| Total: | 337.37 km | ||