| Reggio Emilia to Octeville | 668.49 mi (1,075.82 km) |
| Reggio Emilia to Oignies | 533.91 mi (859.25 km) |
| Reggio Emilia to Oissel | 551.48 mi (887.52 km) |
| Reggio Emilia to Olivet | 470.43 mi (757.09 km) |
| Reggio Emilia to Ollioules | 261.43 mi (420.72 km) |
| Reggio Emilia to Olonne-sur-Mer | 612.13 mi (985.12 km) |
| Reggio Emilia to Oloron-Sainte-Marie | 568.26 mi (914.52 km) |
| Reggio Emilia to Onet Village | 396.49 mi (638.09 km) |
| Reggio Emilia to Onnaing | 511.49 mi (823.17 km) |
| Reggio Emilia to Orange | 289.93 mi (466.60 km) |
| Reggio Emilia to Orchies | 526.51 mi (847.34 km) |
| Reggio Emilia to Orleans | 471.19 mi (758.31 km) |
| Reggio Emilia to Orly | 479.59 mi (771.82 km) |
| Reggio Emilia to Ormesson-sur-Marne | 475.60 mi (765.40 km) |
| Reggio Emilia to Orsay | 485.84 mi (781.89 km) |
