| Turnpoint | Distance | Direction | Observation zone |
|---|---|---|---|
| HB1-HB start west | 4.90 km | 81.2° | Line 10.00 km (Radius 5.00 km) |
| CHN-Chipping Norton | 60.26 km | 207.9° | Cylinder R=0.50 km |
| BLY-Bletchley | 56.15 km | 84.1° | 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: | 175.94 km | ||