| Catania to Oerlinghausen | 1,047.08 mi (1,685.11 km) |
| Catania to Oestrich-Winkel | 932.31 mi (1,500.41 km) |
| Catania to Offenburg | 838.74 mi (1,349.83 km) |
| Catania to Oftersheim | 881.91 mi (1,419.30 km) |
| Catania to Ohrdruf | 945.44 mi (1,521.53 km) |
| Catania to Ohringen | 855.19 mi (1,376.29 km) |
| Catania to Olbernhau | 913.83 mi (1,470.67 km) |
| Catania to Olching | 763.36 mi (1,228.50 km) |
| Catania to Oldenburg | 1,130.05 mi (1,818.64 km) |
| Catania to Oldenburg in Holstein | 1,177.73 mi (1,895.38 km) |
| Catania to Olfen | 1,051.47 mi (1,692.17 km) |
| Catania to Olpe | 999.38 mi (1,608.35 km) |
| Catania to Olsberg | 1,009.93 mi (1,625.32 km) |
| Catania to Oranienburg | 1,057.75 mi (1,702.28 km) |
| Catania to Ortenberg | 936.86 mi (1,507.72 km) |
