| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| HB2-HB start north | 5.39 km | 188.9° | Line 10.00 km (Radius 5.00 km) |
| DED-Deddington | 59.53 km | 199.8° | Cylinder R=0.50 km |
| BLY-Bletchley | 42.11 km | 86.9° | Cylinder R=0.50 km |
| NOS-Northampton South | 24.19 km | 328.3° | Cylinder R=0.50 km |
| HB5-HB control point east | 28.11 km | 0.7° | Cylinder R=0.50 km |
| HBX-HB Finish Ring | 7.23 km | 269.8° | Cylinder R=3.00 km |
| Total: | 161.17 km | ||