| Point de virage | Distance | Direction | Zone d'observation |
|---|---|---|---|
| NBN-Naseby North | 5,69 km | 312,7° | Ligne 10,00 km |
| DED-Deddington | 52,39 km | 206,7° | Cylindre R=0,50 km |
| BLY-Bletchley | 42,11 km | 86,9° | Cylindre R=0,50 km |
| NOS-Northampton South | 24,19 km | 328,3° | Cylindre R=0,50 km |
| HB5-HB control point east | 28,11 km | 0,7° | Cylindre R=0,50 km |
| HBX-HB Finish Ring | 7,23 km | 269,8° | Cylindre R=3,00 km |
| Total : | 154,03 km | ||