| Port Charlotte to Oberkirch | 4,853.18 mi (7,810.43 km) |
| Port Charlotte to Obernburg am Main | 4,869.12 mi (7,836.09 km) |
| Port Charlotte to Obernkirchen | 4,814.60 mi (7,748.35 km) |
| Port Charlotte to Oberschleissheim | 5,010.05 mi (8,062.89 km) |
| Port Charlotte to Oberstdorf | 4,974.96 mi (8,006.43 km) |
| Port Charlotte to Obertraubling | 5,017.63 mi (8,075.10 km) |
| Port Charlotte to Obertshausen | 4,851.09 mi (7,807.07 km) |
| Port Charlotte to Oberursel | 4,837.31 mi (7,784.90 km) |
| Port Charlotte to Ochsenfurt | 4,912.45 mi (7,905.82 km) |
| Port Charlotte to Ochsenhausen | 4,944.60 mi (7,957.56 km) |
| Port Charlotte to Ochtrup | 4,738.09 mi (7,625.21 km) |
| Port Charlotte to Odenthal | 4,758.79 mi (7,658.53 km) |
| Port Charlotte to Oelde | 4,784.68 mi (7,700.21 km) |
| Port Charlotte to Oelsnitz | 4,981.40 mi (8,016.79 km) |
| Port Charlotte to Oer-Erkenschwick | 4,751.91 mi (7,647.46 km) |
