| Louvain-la-Neuve to Oignies | 67.50 mi (108.63 km) |
| Louvain-la-Neuve to Oissel | 176.87 mi (284.64 km) |
| Louvain-la-Neuve to Olivet | 226.32 mi (364.23 km) |
| Louvain-la-Neuve to Ollioules | 523.93 mi (843.19 km) |
| Louvain-la-Neuve to Olonne-sur-Mer | 404.20 mi (650.50 km) |
| Louvain-la-Neuve to Oloron-Sainte-Marie | 569.42 mi (916.39 km) |
| Louvain-la-Neuve to Onet Village | 444.32 mi (715.06 km) |
| Louvain-la-Neuve to Onnaing | 44.05 mi (70.90 km) |
| Louvain-la-Neuve to Orange | 451.30 mi (726.30 km) |
| Louvain-la-Neuve to Orchies | 56.68 mi (91.22 km) |
| Louvain-la-Neuve to Orleans | 223.83 mi (360.21 km) |
| Louvain-la-Neuve to Orly | 162.82 mi (262.04 km) |
| Louvain-la-Neuve to Ormesson-sur-Marne | 156.72 mi (252.22 km) |
| Louvain-la-Neuve to Orsay | 170.83 mi (274.92 km) |
| Louvain-la-Neuve to Orthez | 554.20 mi (891.89 km) |
