| Giesen to Octeville | 531.97 mi (856.12 km) |
| Giesen to Oignies | 320.39 mi (515.62 km) |
| Giesen to Oissel | 431.56 mi (694.53 km) |
| Giesen to Olivet | 463.52 mi (745.96 km) |
| Giesen to Ollioules | 653.32 mi (1,051.42 km) |
| Giesen to Olonne-sur-Mer | 653.07 mi (1,051.02 km) |
| Giesen to Oloron-Sainte-Marie | 789.00 mi (1,269.77 km) |
| Giesen to Onet Village | 635.95 mi (1,023.46 km) |
| Giesen to Onnaing | 298.90 mi (481.03 km) |
| Giesen to Orange | 603.71 mi (971.58 km) |
| Giesen to Orchies | 310.23 mi (499.27 km) |
| Giesen to Orleans | 461.41 mi (742.57 km) |
| Giesen to Orly | 406.51 mi (654.22 km) |
| Giesen to Ormesson-sur-Marne | 399.54 mi (642.99 km) |
| Giesen to Orsay | 415.80 mi (669.16 km) |
