| Northport to Oberkirch | 4,776.95 mi (7,687.75 km) |
| Northport to Obernburg am Main | 4,778.20 mi (7,689.78 km) |
| Northport to Obernkirchen | 4,701.50 mi (7,566.33 km) |
| Northport to Oberschleissheim | 4,927.02 mi (7,929.27 km) |
| Northport to Oberstdorf | 4,903.05 mi (7,890.70 km) |
| Northport to Obertraubling | 4,926.57 mi (7,928.55 km) |
| Northport to Obertshausen | 4,758.87 mi (7,658.66 km) |
| Northport to Oberursel | 4,744.47 mi (7,635.49 km) |
| Northport to Ochsenfurt | 4,820.89 mi (7,758.48 km) |
| Northport to Ochsenhausen | 4,867.63 mi (7,833.70 km) |
| Northport to Ochtrup | 4,629.90 mi (7,451.10 km) |
| Northport to Odenthal | 4,661.72 mi (7,502.32 km) |
| Northport to Oelde | 4,677.81 mi (7,528.20 km) |
| Northport to Oelsnitz | 4,877.47 mi (7,849.53 km) |
| Northport to Oer-Erkenschwick | 4,648.85 mi (7,481.61 km) |
