| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| HB start north | 5.39 km | 189.0° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.68 km |
| Papworth | 66.76 km | 112.1° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| Charlbury | 103.05 km | 246.1° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| Northampton West | 51.38 km | 39.2° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB control point east | 24.74 km | 20.2° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB Finish Ring | 7.26 km | 269.8° | Cylinder R=3.00 km |
| Total: | 253.19 km | ||