| Ottawa to Mouscron | 4,170.21 mi (6,711.30 km) |
| Ottawa to Namur | 4,241.76 mi (6,826.46 km) |
| Ottawa to Neder-Over-Heembeek | 4,208.16 mi (6,772.37 km) |
| Ottawa to Neerpelt | 4,235.24 mi (6,815.96 km) |
| Ottawa to Nevele | 4,172.27 mi (6,714.62 km) |
| Ottawa to Niel | 4,198.61 mi (6,757.00 km) |
| Ottawa to Nieuwpoort | 4,139.34 mi (6,661.62 km) |
| Ottawa to Nijlen | 4,208.61 mi (6,773.11 km) |
| Ottawa to Ninove | 4,196.79 mi (6,754.09 km) |
| Ottawa to Nivelles | 4,216.93 mi (6,786.49 km) |
| Ottawa to Olen | 4,216.63 mi (6,786.02 km) |
| Ottawa to Oostakker | 4,178.05 mi (6,723.92 km) |
| Ottawa to Oosterzele | 4,184.56 mi (6,734.40 km) |
| Ottawa to Oostkamp | 4,156.26 mi (6,688.85 km) |
| Ottawa to Opglabbeek | 4,247.40 mi (6,835.53 km) |
