| Catanzaro to Oberkirch | 788.76 mi (1,269.39 km) |
| Catanzaro to Obernburg am Main | 839.86 mi (1,351.63 km) |
| Catanzaro to Obernkirchen | 990.59 mi (1,594.20 km) |
| Catanzaro to Oberschleissheim | 693.02 mi (1,115.31 km) |
| Catanzaro to Oberstdorf | 668.19 mi (1,075.34 km) |
| Catanzaro to Obertraubling | 729.29 mi (1,173.68 km) |
| Catanzaro to Obertshausen | 860.20 mi (1,384.35 km) |
| Catanzaro to Oberursel | 874.00 mi (1,406.57 km) |
| Catanzaro to Ochsenfurt | 809.26 mi (1,302.38 km) |
| Catanzaro to Ochsenhausen | 715.46 mi (1,151.42 km) |
| Catanzaro to Ochtrup | 1,023.89 mi (1,647.79 km) |
| Catanzaro to Odenthal | 956.16 mi (1,538.80 km) |
| Catanzaro to Oelde | 981.68 mi (1,579.87 km) |
| Catanzaro to Oelsnitz | 824.63 mi (1,327.11 km) |
| Catanzaro to Oer-Erkenschwick | 988.97 mi (1,591.60 km) |
