| Rietberg to Octeville | 465.25 mi (748.75 km) |
| Rietberg to Oignies | 253.05 mi (407.25 km) |
| Rietberg to Oissel | 363.97 mi (585.76 km) |
| Rietberg to Olivet | 398.12 mi (640.71 km) |
| Rietberg to Ollioules | 610.36 mi (982.27 km) |
| Rietberg to Olonne-sur-Mer | 586.34 mi (943.62 km) |
| Rietberg to Oloron-Sainte-Marie | 727.94 mi (1,171.51 km) |
| Rietberg to Onet Village | 579.65 mi (932.86 km) |
| Rietberg to Onnaing | 231.33 mi (372.30 km) |
| Rietberg to Orange | 555.10 mi (893.34 km) |
| Rietberg to Orchies | 242.82 mi (390.77 km) |
| Rietberg to Orleans | 395.95 mi (637.22 km) |
| Rietberg to Orly | 340.02 mi (547.21 km) |
| Rietberg to Ormesson-sur-Marne | 333.11 mi (536.09 km) |
| Rietberg to Orsay | 349.20 mi (561.98 km) |
