| Halifax to Opole | 861.52 mi (1,386.47 km) |
| Halifax to Orzesze | 908.50 mi (1,462.09 km) |
| Halifax to Osowa | 822.84 mi (1,324.23 km) |
| Halifax to Ostroda | 889.14 mi (1,430.93 km) |
| Halifax to Ostroleka | 961.97 mi (1,548.14 km) |
| Halifax to Ostrow Mazowiecka | 979.56 mi (1,576.45 km) |
| Halifax to Ostrow Wielkopolski | 833.79 mi (1,341.85 km) |
| Halifax to Ostrowiec Swietokrzyski | 996.29 mi (1,603.37 km) |
| Halifax to Ostrzeszow | 843.57 mi (1,357.59 km) |
| Halifax to Oswiecim | 930.74 mi (1,497.87 km) |
| Halifax to Otwock | 965.56 mi (1,553.92 km) |
| Halifax to Ozarow Mazowiecki | 944.66 mi (1,520.28 km) |
| Halifax to Ozimek | 872.73 mi (1,404.52 km) |
| Halifax to Ozorkow | 887.37 mi (1,428.09 km) |
| Halifax to Pabianice | 897.82 mi (1,444.89 km) |
