| Caltagirone to Oberkirch | 844.85 mi (1,359.66 km) |
| Caltagirone to Obernburg am Main | 910.75 mi (1,465.71 km) |
| Caltagirone to Obernkirchen | 1,070.85 mi (1,723.36 km) |
| Caltagirone to Oberschleissheim | 775.27 mi (1,247.68 km) |
| Caltagirone to Oberstdorf | 735.05 mi (1,182.95 km) |
| Caltagirone to Obertraubling | 818.83 mi (1,317.78 km) |
| Caltagirone to Obertshausen | 930.08 mi (1,496.81 km) |
| Caltagirone to Oberursel | 942.84 mi (1,517.36 km) |
| Caltagirone to Ochsenfurt | 885.73 mi (1,425.45 km) |
| Caltagirone to Ochsenhausen | 783.34 mi (1,260.66 km) |
| Caltagirone to Ochtrup | 1,093.52 mi (1,759.85 km) |
| Caltagirone to Odenthal | 1,020.05 mi (1,641.61 km) |
| Caltagirone to Oelde | 1,055.03 mi (1,697.90 km) |
| Caltagirone to Oelsnitz | 917.95 mi (1,477.29 km) |
| Caltagirone to Oer-Erkenschwick | 1,056.49 mi (1,700.25 km) |
