| Halstenbek to Octeville | 563.91 mi (907.52 km) |
| Halstenbek to Oignies | 363.54 mi (585.06 km) |
| Halstenbek to Oissel | 478.49 mi (770.06 km) |
| Halstenbek to Olivet | 527.84 mi (849.48 km) |
| Halstenbek to Ollioules | 747.52 mi (1,203.02 km) |
| Halstenbek to Olonne-sur-Mer | 709.28 mi (1,141.48 km) |
| Halstenbek to Oloron-Sainte-Marie | 863.85 mi (1,390.23 km) |
| Halstenbek to Onet Village | 718.75 mi (1,156.72 km) |
| Halstenbek to Onnaing | 347.18 mi (558.74 km) |
| Halstenbek to Orange | 694.24 mi (1,117.26 km) |
| Halstenbek to Orchies | 354.86 mi (571.09 km) |
| Halstenbek to Orleans | 525.50 mi (845.72 km) |
| Halstenbek to Orly | 466.49 mi (750.74 km) |
| Halstenbek to Ormesson-sur-Marne | 459.98 mi (740.26 km) |
| Halstenbek to Orsay | 475.02 mi (764.47 km) |
