| Reggio Emilia to Oegstgeest | 588.76 mi (947.51 km) |
| Reggio Emilia to Oirschot | 530.04 mi (853.02 km) |
| Reggio Emilia to Oisterwijk | 537.17 mi (864.50 km) |
| Reggio Emilia to Oldebroek | 577.23 mi (928.96 km) |
| Reggio Emilia to Oldenzaal | 552.66 mi (889.41 km) |
| Reggio Emilia to Ommen | 573.15 mi (922.40 km) |
| Reggio Emilia to Oosterend | 609.82 mi (981.41 km) |
| Reggio Emilia to Oosterhout | 548.21 mi (882.26 km) |
| Reggio Emilia to Oosterwolde | 605.59 mi (974.60 km) |
| Reggio Emilia to Oostzaan | 595.04 mi (957.63 km) |
| Reggio Emilia to Opmeer | 610.03 mi (981.74 km) |
| Reggio Emilia to Oss | 541.75 mi (871.87 km) |
| Reggio Emilia to Oud-Beijerland | 568.73 mi (915.28 km) |
| Reggio Emilia to Oudenbosch | 552.64 mi (889.39 km) |
| Reggio Emilia to Oudewater | 570.23 mi (917.70 km) |
