| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| Leighton Buzzard NE | 9.03 km | 140.1° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.31 km |
| Calvert Rail Junction | 25.90 km | 267.8° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Didcot | 37.84 km | 207.2° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Mursley | 48.35 km | 39.6° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Dunstable Airfield | 20.30 km | 117.3° | Line 5.00 km, Angle=125.0° |
| Total: | 130.28 km / 232.84 km (132.39 km) | ||