| Gardelegen to Octeville | 599.27 mi (964.44 km) |
| Gardelegen to Oignies | 387.94 mi (624.32 km) |
| Gardelegen to Oissel | 498.99 mi (803.05 km) |
| Gardelegen to Olivet | 528.48 mi (850.51 km) |
| Gardelegen to Ollioules | 697.21 mi (1,122.04 km) |
| Gardelegen to Olonne-sur-Mer | 719.26 mi (1,157.54 km) |
| Gardelegen to Oloron-Sainte-Marie | 849.33 mi (1,366.86 km) |
| Gardelegen to Onet Village | 692.14 mi (1,113.89 km) |
| Gardelegen to Onnaing | 366.41 mi (589.68 km) |
| Gardelegen to Orange | 653.06 mi (1,050.99 km) |
| Gardelegen to Orchies | 377.78 mi (607.98 km) |
| Gardelegen to Orleans | 526.44 mi (847.22 km) |
| Gardelegen to Orly | 472.60 mi (760.57 km) |
| Gardelegen to Ormesson-sur-Marne | 465.56 mi (749.25 km) |
| Gardelegen to Orsay | 481.98 mi (775.68 km) |
