| Somma Vesuviana to Oegstgeest | 912.08 mi (1,467.86 km) |
| Somma Vesuviana to Oirschot | 853.03 mi (1,372.81 km) |
| Somma Vesuviana to Oisterwijk | 860.20 mi (1,384.36 km) |
| Somma Vesuviana to Oldebroek | 895.07 mi (1,440.48 km) |
| Somma Vesuviana to Oldenzaal | 866.15 mi (1,393.93 km) |
| Somma Vesuviana to Ommen | 888.50 mi (1,429.90 km) |
| Somma Vesuviana to Oosterend | 925.06 mi (1,488.74 km) |
| Somma Vesuviana to Oosterhout | 871.98 mi (1,403.32 km) |
| Somma Vesuviana to Oosterwolde | 919.85 mi (1,480.36 km) |
| Somma Vesuviana to Oostzaan | 916.53 mi (1,475.02 km) |
| Somma Vesuviana to Opmeer | 930.52 mi (1,497.52 km) |
| Somma Vesuviana to Oss | 863.27 mi (1,389.29 km) |
| Somma Vesuviana to Oud-Beijerland | 893.12 mi (1,437.34 km) |
| Somma Vesuviana to Oudenbosch | 877.30 mi (1,411.88 km) |
| Somma Vesuviana to Oudewater | 892.97 mi (1,437.10 km) |
