| Alblasserdam to Orbetello | 719.84 mi (1,158.46 km) |
| Alblasserdam to Oria | 997.83 mi (1,605.85 km) |
| Alblasserdam to Oristano | 847.61 mi (1,364.10 km) |
| Alblasserdam to Orta Nova | 895.19 mi (1,440.66 km) |
| Alblasserdam to Orte | 743.48 mi (1,196.52 km) |
| Alblasserdam to Ortona | 799.84 mi (1,287.21 km) |
| Alblasserdam to Orvieto | 721.29 mi (1,160.80 km) |
| Alblasserdam to Orzinuovi | 507.30 mi (816.43 km) |
| Alblasserdam to Osimo | 708.84 mi (1,140.77 km) |
| Alblasserdam to Ospitaletto | 500.80 mi (805.96 km) |
| Alblasserdam to Ostuni | 982.99 mi (1,581.97 km) |
| Alblasserdam to Ottaviano | 891.86 mi (1,435.32 km) |
| Alblasserdam to Ovada | 531.90 mi (856.00 km) |
| Alblasserdam to Ozieri | 806.44 mi (1,297.85 km) |
| Alblasserdam to Paceco | 1,032.63 mi (1,661.85 km) |
