| Siegburg to Octeville | 399.25 mi (642.54 km) |
| Siegburg to Oignies | 185.92 mi (299.22 km) |
| Siegburg to Oissel | 289.13 mi (465.31 km) |
| Siegburg to Olivet | 313.27 mi (504.15 km) |
| Siegburg to Ollioules | 533.22 mi (858.14 km) |
| Siegburg to Olonne-sur-Mer | 504.06 mi (811.20 km) |
| Siegburg to Oloron-Sainte-Marie | 640.90 mi (1,031.43 km) |
| Siegburg to Onet Village | 493.63 mi (794.42 km) |
| Siegburg to Onnaing | 160.72 mi (258.65 km) |
| Siegburg to Orange | 473.70 mi (762.34 km) |
| Siegburg to Orchies | 174.98 mi (281.60 km) |
| Siegburg to Orleans | 311.19 mi (500.81 km) |
| Siegburg to Orly | 257.42 mi (414.28 km) |
| Siegburg to Ormesson-sur-Marne | 250.34 mi (402.89 km) |
| Siegburg to Orsay | 266.90 mi (429.53 km) |
