| Hoogstraten to Oria | 971.37 mi (1,563.26 km) |
| Hoogstraten to Oristano | 815.08 mi (1,311.74 km) |
| Hoogstraten to Orta Nova | 867.68 mi (1,396.39 km) |
| Hoogstraten to Orte | 713.79 mi (1,148.74 km) |
| Hoogstraten to Ortona | 771.91 mi (1,242.27 km) |
| Hoogstraten to Orvieto | 691.51 mi (1,112.88 km) |
| Hoogstraten to Orzinuovi | 477.25 mi (768.05 km) |
| Hoogstraten to Osimo | 680.98 mi (1,095.94 km) |
| Hoogstraten to Ospitaletto | 471.05 mi (758.07 km) |
| Hoogstraten to Ostuni | 956.67 mi (1,539.62 km) |
| Hoogstraten to Ottaviano | 862.98 mi (1,388.83 km) |
| Hoogstraten to Ovada | 500.17 mi (804.95 km) |
| Hoogstraten to Ozieri | 774.09 mi (1,245.78 km) |
| Hoogstraten to Paceco | 1,001.37 mi (1,611.55 km) |
| Hoogstraten to Pachino | 1,134.30 mi (1,825.48 km) |
