| Halifax to Oerlinghausen | 455.40 mi (732.90 km) |
| Halifax to Oestrich-Winkel | 492.66 mi (792.85 km) |
| Halifax to Offenburg | 558.31 mi (898.52 km) |
| Halifax to Oftersheim | 539.56 mi (868.34 km) |
| Halifax to Ohrdruf | 567.91 mi (913.97 km) |
| Halifax to Ohringen | 579.50 mi (932.61 km) |
| Halifax to Olbernhau | 675.84 mi (1,087.65 km) |
| Halifax to Olching | 687.30 mi (1,106.10 km) |
| Halifax to Oldenburg | 416.37 mi (670.08 km) |
| Halifax to Oldenburg in Holstein | 518.31 mi (834.14 km) |
| Halifax to Olfen | 410.72 mi (660.98 km) |
| Halifax to Olpe | 449.32 mi (723.11 km) |
| Halifax to Olsberg | 464.22 mi (747.08 km) |
| Halifax to Oranienburg | 626.77 mi (1,008.69 km) |
| Halifax to Ortenberg | 518.40 mi (834.28 km) |
