| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| Gransden Lodge | 0.00 km | 0.0° | Next, R=5.00 km, Angle=90.0° |
| Rushden | 36.64 km | 295.0° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Northampton South | 25.46 km | 232.9° | Symmetric, Rmin=5.00 km, Rmax=20.00 km, Angle=180.0°, Cylinder R=5.00 km |
| Grafham Water | 43.18 km | 74.2° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Oakington | 21.41 km | 99.5° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Gransden Lodge | 12.11 km | 229.2° | Cylinder R=3.00 km |
| Total: | 138.81 km | ||