| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| HB Start north | 5.39 km | 189.0° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.50 km |
| Thame Church | 81.88 km | 177.7° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| Bottesford | 133.27 km | 5.2° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| Littleport | 92.66 km | 124.6° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| St Neots | 48.87 km | 234.7° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| HB control point east | 49.85 km | 301.0° | 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: | 413.79 km | ||