| Oud-Beijerland to Orbetello | 721.98 mi (1,161.91 km) |
| Oud-Beijerland to Oria | 1,003.00 mi (1,614.16 km) |
| Oud-Beijerland to Oristano | 846.95 mi (1,363.03 km) |
| Oud-Beijerland to Orta Nova | 899.74 mi (1,448.00 km) |
| Oud-Beijerland to Orte | 746.50 mi (1,201.38 km) |
| Oud-Beijerland to Ortona | 804.13 mi (1,294.12 km) |
| Oud-Beijerland to Orvieto | 724.24 mi (1,165.55 km) |
| Oud-Beijerland to Orzinuovi | 510.01 mi (820.78 km) |
| Oud-Beijerland to Osimo | 713.17 mi (1,147.74 km) |
| Oud-Beijerland to Ospitaletto | 503.76 mi (810.72 km) |
| Oud-Beijerland to Ostuni | 988.24 mi (1,590.41 km) |
| Oud-Beijerland to Ottaviano | 895.51 mi (1,441.18 km) |
| Oud-Beijerland to Ovada | 532.81 mi (857.48 km) |
| Oud-Beijerland to Ozieri | 806.24 mi (1,297.52 km) |
| Oud-Beijerland to Paceco | 1,034.13 mi (1,664.27 km) |
