| Amsterdam to Orbetello | 746.54 mi (1,201.44 km) |
| Amsterdam to Oria | 1,017.07 mi (1,636.82 km) |
| Amsterdam to Oristano | 879.09 mi (1,414.76 km) |
| Amsterdam to Orta Nova | 916.16 mi (1,474.42 km) |
| Amsterdam to Orte | 768.30 mi (1,236.46 km) |
| Amsterdam to Ortona | 821.57 mi (1,322.19 km) |
| Amsterdam to Orvieto | 746.28 mi (1,201.03 km) |
| Amsterdam to Orzinuovi | 533.10 mi (857.94 km) |
| Amsterdam to Osimo | 730.58 mi (1,175.75 km) |
| Amsterdam to Ospitaletto | 526.06 mi (846.62 km) |
| Amsterdam to Ostuni | 1,002.03 mi (1,612.61 km) |
| Amsterdam to Ottaviano | 915.13 mi (1,472.76 km) |
| Amsterdam to Ovada | 561.08 mi (902.97 km) |
| Amsterdam to Ozieri | 837.25 mi (1,347.43 km) |
| Amsterdam to Paceco | 1,060.40 mi (1,706.56 km) |
