| Giurgiu to Octeville | 1,356.88 mi (2,183.68 km) |
| Giurgiu to Oignies | 1,164.60 mi (1,874.24 km) |
| Giurgiu to Oissel | 1,232.63 mi (1,983.73 km) |
| Giurgiu to Olivet | 1,184.57 mi (1,906.39 km) |
| Giurgiu to Ollioules | 1,007.27 mi (1,621.05 km) |
| Giurgiu to Olonne-sur-Mer | 1,355.51 mi (2,181.48 km) |
| Giurgiu to Oloron-Sainte-Marie | 1,326.28 mi (2,134.43 km) |
| Giurgiu to Onet Village | 1,155.93 mi (1,860.29 km) |
| Giurgiu to Onnaing | 1,137.42 mi (1,830.51 km) |
| Giurgiu to Orange | 1,048.77 mi (1,687.83 km) |
| Giurgiu to Orchies | 1,154.01 mi (1,857.19 km) |
| Giurgiu to Orleans | 1,184.39 mi (1,906.10 km) |
| Giurgiu to Orly | 1,168.51 mi (1,880.53 km) |
| Giurgiu to Ormesson-sur-Marne | 1,162.34 mi (1,870.61 km) |
| Giurgiu to Orsay | 1,177.37 mi (1,894.79 km) |
