| Zandvoort to Orbetello | 752.90 mi (1,211.68 km) |
| Zandvoort to Oria | 1,026.88 mi (1,652.60 km) |
| Zandvoort to Oristano | 882.25 mi (1,419.85 km) |
| Zandvoort to Orta Nova | 925.28 mi (1,489.10 km) |
| Zandvoort to Orte | 775.66 mi (1,248.31 km) |
| Zandvoort to Ortona | 830.36 mi (1,336.33 km) |
| Zandvoort to Orvieto | 753.55 mi (1,212.73 km) |
| Zandvoort to Orzinuovi | 539.91 mi (868.90 km) |
| Zandvoort to Osimo | 739.35 mi (1,189.87 km) |
| Zandvoort to Ospitaletto | 533.15 mi (858.02 km) |
| Zandvoort to Ostuni | 1,011.91 mi (1,628.52 km) |
| Zandvoort to Ottaviano | 923.26 mi (1,485.84 km) |
| Zandvoort to Ovada | 565.91 mi (910.75 km) |
| Zandvoort to Ozieri | 840.95 mi (1,353.38 km) |
| Zandvoort to Paceco | 1,066.17 mi (1,715.84 km) |
