| Harenkarspel to Octeville | 350.87 mi (564.68 km) |
| Harenkarspel to Oignies | 174.09 mi (280.17 km) |
| Harenkarspel to Oissel | 283.63 mi (456.46 km) |
| Harenkarspel to Olivet | 359.49 mi (578.55 km) |
| Harenkarspel to Ollioules | 664.80 mi (1,069.89 km) |
| Harenkarspel to Olonne-sur-Mer | 518.32 mi (834.16 km) |
| Harenkarspel to Oloron-Sainte-Marie | 704.05 mi (1,133.06 km) |
| Harenkarspel to Onet Village | 586.66 mi (944.15 km) |
| Harenkarspel to Onnaing | 169.77 mi (273.22 km) |
| Harenkarspel to Orange | 593.94 mi (955.85 km) |
| Harenkarspel to Orchies | 169.30 mi (272.47 km) |
| Harenkarspel to Orleans | 356.85 mi (574.30 km) |
| Harenkarspel to Orly | 294.63 mi (474.16 km) |
| Harenkarspel to Ormesson-sur-Marne | 289.71 mi (466.24 km) |
| Harenkarspel to Orsay | 300.86 mi (484.18 km) |
