| Nieuw-Vennep to Orbetello | 744.66 mi (1,198.42 km) |
| Nieuw-Vennep to Oria | 1,018.77 mi (1,639.55 km) |
| Nieuw-Vennep to Oristano | 874.36 mi (1,407.14 km) |
| Nieuw-Vennep to Orta Nova | 917.09 mi (1,475.92 km) |
| Nieuw-Vennep to Orte | 767.40 mi (1,235.01 km) |
| Nieuw-Vennep to Ortona | 822.14 mi (1,323.11 km) |
| Nieuw-Vennep to Orvieto | 745.29 mi (1,199.43 km) |
| Nieuw-Vennep to Orzinuovi | 531.65 mi (855.61 km) |
| Nieuw-Vennep to Osimo | 731.13 mi (1,176.65 km) |
| Nieuw-Vennep to Ospitaletto | 524.89 mi (844.73 km) |
| Nieuw-Vennep to Ostuni | 1,003.81 mi (1,615.48 km) |
| Nieuw-Vennep to Ottaviano | 915.00 mi (1,472.56 km) |
| Nieuw-Vennep to Ovada | 557.78 mi (897.66 km) |
| Nieuw-Vennep to Ozieri | 832.97 mi (1,340.54 km) |
| Nieuw-Vennep to Paceco | 1,057.97 mi (1,702.64 km) |
