| Sint-Joost-ten-Node to Oria | 956.57 mi (1,539.45 km) |
| Sint-Joost-ten-Node to Oristano | 782.93 mi (1,260.01 km) |
| Sint-Joost-ten-Node to Orta Nova | 850.80 mi (1,369.23 km) |
| Sint-Joost-ten-Node to Orte | 691.96 mi (1,113.61 km) |
| Sint-Joost-ten-Node to Ortona | 754.27 mi (1,213.88 km) |
| Sint-Joost-ten-Node to Orvieto | 669.49 mi (1,077.45 km) |
| Sint-Joost-ten-Node to Orzinuovi | 455.03 mi (732.30 km) |
| Sint-Joost-ten-Node to Osimo | 663.67 mi (1,068.08 km) |
| Sint-Joost-ten-Node to Ospitaletto | 449.69 mi (723.71 km) |
| Sint-Joost-ten-Node to Ostuni | 942.18 mi (1,516.29 km) |
| Sint-Joost-ten-Node to Ottaviano | 842.95 mi (1,356.59 km) |
| Sint-Joost-ten-Node to Ovada | 472.43 mi (760.30 km) |
| Sint-Joost-ten-Node to Ozieri | 743.06 mi (1,195.84 km) |
| Sint-Joost-ten-Node to Paceco | 974.67 mi (1,568.57 km) |
| Sint-Joost-ten-Node to Pachino | 1,110.63 mi (1,787.38 km) |
