| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| Keevil | 0.00 km | 0.0° | Next, R=5.00 km, Angle=90.0° |
| Malmesbury | 30.61 km | 2.5° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Ogbourne | 29.74 km | 117.4° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| Keevil | 32.52 km | 239.0° | Cylinder R=3.00 km |
| Total: | 92.87 km | ||