| Zaandijk to Orbetello | 754.09 mi (1,213.60 km) |
| Zaandijk to Oria | 1,024.55 mi (1,648.85 km) |
| Zaandijk to Oristano | 886.30 mi (1,426.36 km) |
| Zaandijk to Orta Nova | 923.71 mi (1,486.56 km) |
| Zaandijk to Orte | 775.89 mi (1,248.68 km) |
| Zaandijk to Ortona | 829.13 mi (1,334.36 km) |
| Zaandijk to Orvieto | 753.87 mi (1,213.24 km) |
| Zaandijk to Orzinuovi | 540.67 mi (870.13 km) |
| Zaandijk to Osimo | 738.14 mi (1,187.93 km) |
| Zaandijk to Ospitaletto | 533.65 mi (858.82 km) |
| Zaandijk to Ostuni | 1,009.50 mi (1,624.63 km) |
| Zaandijk to Ottaviano | 922.72 mi (1,484.98 km) |
| Zaandijk to Ovada | 568.51 mi (914.92 km) |
| Zaandijk to Ozieri | 844.55 mi (1,359.17 km) |
| Zaandijk to Paceco | 1,067.93 mi (1,718.66 km) |
