| IJmuiden to Orbetello | 756.94 mi (1,218.18 km) |
| IJmuiden to Oria | 1,029.17 mi (1,656.29 km) |
| IJmuiden to Oristano | 887.53 mi (1,428.35 km) |
| IJmuiden to Orta Nova | 927.97 mi (1,493.42 km) |
| IJmuiden to Orte | 779.25 mi (1,254.08 km) |
| IJmuiden to Ortona | 833.22 mi (1,340.94 km) |
| IJmuiden to Orvieto | 757.18 mi (1,218.57 km) |
| IJmuiden to Orzinuovi | 543.74 mi (875.06 km) |
| IJmuiden to Osimo | 742.22 mi (1,194.49 km) |
| IJmuiden to Ospitaletto | 536.85 mi (863.98 km) |
| IJmuiden to Ostuni | 1,014.16 mi (1,632.13 km) |
| IJmuiden to Ottaviano | 926.47 mi (1,491.01 km) |
| IJmuiden to Ovada | 570.57 mi (918.25 km) |
| IJmuiden to Ozieri | 846.05 mi (1,361.58 km) |
| IJmuiden to Paceco | 1,070.48 mi (1,722.77 km) |
