| North Port to Oberkirch | 4,853.57 mi (7,811.07 km) |
| North Port to Obernburg am Main | 4,869.33 mi (7,836.43 km) |
| North Port to Obernkirchen | 4,814.51 mi (7,748.21 km) |
| North Port to Oberschleissheim | 5,010.37 mi (8,063.42 km) |
| North Port to Oberstdorf | 4,975.43 mi (8,007.18 km) |
| North Port to Obertraubling | 5,017.86 mi (8,075.46 km) |
| North Port to Obertshausen | 4,851.28 mi (7,807.38 km) |
| North Port to Oberursel | 4,837.49 mi (7,785.19 km) |
| North Port to Ochsenfurt | 4,912.65 mi (7,906.15 km) |
| North Port to Ochsenhausen | 4,944.99 mi (7,958.20 km) |
| North Port to Ochtrup | 4,738.06 mi (7,625.16 km) |
| North Port to Odenthal | 4,758.90 mi (7,658.71 km) |
| North Port to Oelde | 4,784.68 mi (7,700.19 km) |
| North Port to Oelsnitz | 4,981.46 mi (8,016.88 km) |
| North Port to Oer-Erkenschwick | 4,751.95 mi (7,647.52 km) |
