| San Severino Marche to Oegstgeest | 738.29 mi (1,188.17 km) |
| San Severino Marche to Oirschot | 679.19 mi (1,093.05 km) |
| San Severino Marche to Oisterwijk | 686.37 mi (1,104.60 km) |
| San Severino Marche to Oldebroek | 720.13 mi (1,158.93 km) |
| San Severino Marche to Oldenzaal | 690.99 mi (1,112.04 km) |
| San Severino Marche to Ommen | 713.38 mi (1,148.08 km) |
| San Severino Marche to Oosterend | 749.93 mi (1,206.89 km) |
| San Severino Marche to Oosterhout | 698.43 mi (1,124.02 km) |
| San Severino Marche to Oosterwolde | 744.69 mi (1,198.47 km) |
| San Severino Marche to Oostzaan | 742.17 mi (1,194.40 km) |
| San Severino Marche to Opmeer | 755.92 mi (1,216.53 km) |
| San Severino Marche to Oss | 688.97 mi (1,108.78 km) |
| San Severino Marche to Oud-Beijerland | 719.84 mi (1,158.47 km) |
| San Severino Marche to Oudenbosch | 704.20 mi (1,133.30 km) |
| San Severino Marche to Oudewater | 718.99 mi (1,157.10 km) |
