| Potenza Picena to Oegstgeest | 741.44 mi (1,193.23 km) |
| Potenza Picena to Oirschot | 682.34 mi (1,098.12 km) |
| Potenza Picena to Oisterwijk | 689.52 mi (1,109.68 km) |
| Potenza Picena to Oldebroek | 721.28 mi (1,160.79 km) |
| Potenza Picena to Oldenzaal | 691.01 mi (1,112.07 km) |
| Potenza Picena to Ommen | 713.83 mi (1,148.79 km) |
| Potenza Picena to Oosterend | 750.25 mi (1,207.41 km) |
| Potenza Picena to Oosterhout | 701.90 mi (1,129.60 km) |
| Potenza Picena to Oosterwolde | 744.76 mi (1,198.58 km) |
| Potenza Picena to Oostzaan | 744.52 mi (1,198.19 km) |
| Potenza Picena to Opmeer | 757.86 mi (1,219.66 km) |
| Potenza Picena to Oss | 691.47 mi (1,112.82 km) |
| Potenza Picena to Oud-Beijerland | 723.57 mi (1,164.48 km) |
| Potenza Picena to Oudenbosch | 708.12 mi (1,139.62 km) |
| Potenza Picena to Oudewater | 721.92 mi (1,161.82 km) |
