| Spijkenisse to Orbetello | 725.37 mi (1,167.37 km) |
| Spijkenisse to Oria | 1,006.63 mi (1,620.01 km) |
| Spijkenisse to Oristano | 849.92 mi (1,367.82 km) |
| Spijkenisse to Orta Nova | 903.35 mi (1,453.80 km) |
| Spijkenisse to Orte | 749.99 mi (1,206.99 km) |
| Spijkenisse to Ortona | 807.72 mi (1,299.89 km) |
| Spijkenisse to Orvieto | 727.72 mi (1,171.14 km) |
| Spijkenisse to Orzinuovi | 513.47 mi (826.34 km) |
| Spijkenisse to Osimo | 716.76 mi (1,153.52 km) |
| Spijkenisse to Ospitaletto | 507.24 mi (816.33 km) |
| Spijkenisse to Ostuni | 991.87 mi (1,596.26 km) |
| Spijkenisse to Ottaviano | 899.04 mi (1,446.87 km) |
| Spijkenisse to Ovada | 536.05 mi (862.69 km) |
| Spijkenisse to Ozieri | 809.30 mi (1,302.44 km) |
| Spijkenisse to Paceco | 1,037.44 mi (1,669.60 km) |
