| Ilsenburg to Octeville | 559.89 mi (901.06 km) |
| Ilsenburg to Oignies | 346.67 mi (557.91 km) |
| Ilsenburg to Oissel | 454.92 mi (732.12 km) |
| Ilsenburg to Olivet | 478.53 mi (770.12 km) |
| Ilsenburg to Ollioules | 643.51 mi (1,035.62 km) |
| Ilsenburg to Olonne-sur-Mer | 670.83 mi (1,079.60 km) |
| Ilsenburg to Oloron-Sainte-Marie | 795.96 mi (1,280.97 km) |
| Ilsenburg to Onet Village | 637.80 mi (1,026.44 km) |
| Ilsenburg to Onnaing | 323.62 mi (520.82 km) |
| Ilsenburg to Orange | 598.59 mi (963.33 km) |
| Ilsenburg to Orchies | 336.15 mi (540.97 km) |
| Ilsenburg to Orleans | 476.56 mi (766.96 km) |
| Ilsenburg to Orly | 424.37 mi (682.96 km) |
| Ilsenburg to Ormesson-sur-Marne | 417.25 mi (671.50 km) |
| Ilsenburg to Orsay | 433.92 mi (698.32 km) |
