| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| Walton | 7.28 km | 128.6° | Next, R=5.00 km, Angle=90.0°, Max.alt. is 1.50 km |
| Stony Stratford | 49.13 km | 159.1° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| Grantham | 93.52 km | 8.5° | Symmetric, Rmin=0.50 km, Rmax=10.00 km, Angle=180.0°, Cylinder R=0.50 km |
| Chatteris | 68.71 km | 135.9° | Symmetric, Rmin=0.50 km, Rmax=20.00 km, Angle=90.0°, Cylinder R=0.50 km |
| St Neots | 33.89 km | 217.4° | 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: | 302.36 km | ||