| Grimsby to Oberkirch | 496.11 mi (798.41 km) |
| Grimsby to Obernburg am Main | 470.86 mi (757.78 km) |
| Grimsby to Obernkirchen | 393.29 mi (632.94 km) |
| Grimsby to Oberschleissheim | 625.22 mi (1,006.19 km) |
| Grimsby to Oberstdorf | 622.07 mi (1,001.13 km) |
| Grimsby to Obertraubling | 616.37 mi (991.94 km) |
| Grimsby to Obertshausen | 450.55 mi (725.09 km) |
| Grimsby to Oberursel | 435.82 mi (701.39 km) |
| Grimsby to Ochsenfurt | 511.95 mi (823.90 km) |
| Grimsby to Ochsenhausen | 578.50 mi (931.01 km) |
| Grimsby to Ochtrup | 317.21 mi (510.50 km) |
| Grimsby to Odenthal | 350.65 mi (564.31 km) |
| Grimsby to Oelde | 364.57 mi (586.72 km) |
| Grimsby to Oelsnitz | 563.77 mi (907.29 km) |
| Grimsby to Oer-Erkenschwick | 334.94 mi (539.03 km) |
