| Caltagirone to Oerlinghausen | 1,056.68 mi (1,700.56 km) |
| Caltagirone to Oestrich-Winkel | 939.15 mi (1,511.41 km) |
| Caltagirone to Offenburg | 843.62 mi (1,357.67 km) |
| Caltagirone to Oftersheim | 889.02 mi (1,430.74 km) |
| Caltagirone to Ohrdruf | 957.27 mi (1,540.58 km) |
| Caltagirone to Ohringen | 863.70 mi (1,390.00 km) |
| Caltagirone to Olbernhau | 929.69 mi (1,496.19 km) |
| Caltagirone to Olching | 774.43 mi (1,246.32 km) |
| Caltagirone to Oldenburg | 1,139.92 mi (1,834.53 km) |
| Caltagirone to Oldenburg in Holstein | 1,191.41 mi (1,917.39 km) |
| Caltagirone to Olfen | 1,059.11 mi (1,704.47 km) |
| Caltagirone to Olpe | 1,007.00 mi (1,620.60 km) |
| Caltagirone to Olsberg | 1,018.78 mi (1,639.56 km) |
| Caltagirone to Oranienburg | 1,073.88 mi (1,728.24 km) |
| Caltagirone to Ortenberg | 945.71 mi (1,521.97 km) |
