| Modica to Oberkirch | 873.63 mi (1,405.97 km) |
| Modica to Obernburg am Main | 939.07 mi (1,511.28 km) |
| Modica to Obernkirchen | 1,098.81 mi (1,768.36 km) |
| Modica to Oberschleissheim | 802.91 mi (1,292.16 km) |
| Modica to Oberstdorf | 763.41 mi (1,228.59 km) |
| Modica to Obertraubling | 846.04 mi (1,361.57 km) |
| Modica to Obertshausen | 958.45 mi (1,542.47 km) |
| Modica to Oberursel | 971.26 mi (1,563.09 km) |
| Modica to Ochsenfurt | 913.78 mi (1,470.59 km) |
| Modica to Ochsenhausen | 811.70 mi (1,306.31 km) |
| Modica to Ochtrup | 1,121.97 mi (1,805.64 km) |
| Modica to Odenthal | 1,048.67 mi (1,687.68 km) |
| Modica to Oelde | 1,083.31 mi (1,743.42 km) |
| Modica to Oelsnitz | 944.97 mi (1,520.78 km) |
| Modica to Oer-Erkenschwick | 1,085.00 mi (1,746.15 km) |
