| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| Naseby West | 4.83 km | 357.8° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.37 km |
| Grafham Water | 52.12 km | 102.9° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Oundle | 25.01 km | 332.0° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB East | 39.42 km | 262.4° | Line 1.00 km (Radius 0.50 km) |
| Total: | 116.55 km | ||