| Roelofarendsveen to Orbetello | 740.72 mi (1,192.08 km) |
| Roelofarendsveen to Oria | 1,015.52 mi (1,634.31 km) |
| Roelofarendsveen to Oristano | 870.05 mi (1,400.21 km) |
| Roelofarendsveen to Orta Nova | 913.67 mi (1,470.41 km) |
| Roelofarendsveen to Orte | 763.62 mi (1,228.93 km) |
| Roelofarendsveen to Ortona | 818.65 mi (1,317.49 km) |
| Roelofarendsveen to Orvieto | 741.50 mi (1,193.33 km) |
| Roelofarendsveen to Orzinuovi | 527.79 mi (849.40 km) |
| Roelofarendsveen to Osimo | 727.64 mi (1,171.03 km) |
| Roelofarendsveen to Ospitaletto | 521.07 mi (838.59 km) |
| Roelofarendsveen to Ostuni | 1,000.58 mi (1,610.28 km) |
| Roelofarendsveen to Ottaviano | 911.37 mi (1,466.71 km) |
| Roelofarendsveen to Ovada | 553.64 mi (891.00 km) |
| Roelofarendsveen to Ozieri | 828.71 mi (1,333.68 km) |
| Roelofarendsveen to Paceco | 1,053.94 mi (1,696.15 km) |
