| Zafferana Etnea to Oberkirch | 828.15 mi (1,332.78 km) |
| Zafferana Etnea to Obernburg am Main | 890.30 mi (1,432.80 km) |
| Zafferana Etnea to Obernkirchen | 1,048.26 mi (1,687.01 km) |
| Zafferana Etnea to Oberschleissheim | 751.41 mi (1,209.27 km) |
| Zafferana Etnea to Oberstdorf | 715.06 mi (1,150.78 km) |
| Zafferana Etnea to Obertraubling | 793.20 mi (1,276.53 km) |
| Zafferana Etnea to Obertshausen | 909.95 mi (1,464.42 km) |
| Zafferana Etnea to Oberursel | 923.02 mi (1,485.46 km) |
| Zafferana Etnea to Ochsenfurt | 863.73 mi (1,390.04 km) |
| Zafferana Etnea to Ochsenhausen | 763.28 mi (1,228.38 km) |
| Zafferana Etnea to Ochtrup | 1,073.82 mi (1,728.15 km) |
| Zafferana Etnea to Odenthal | 1,001.75 mi (1,612.15 km) |
| Zafferana Etnea to Oelde | 1,034.26 mi (1,664.48 km) |
| Zafferana Etnea to Oelsnitz | 891.58 mi (1,434.86 km) |
| Zafferana Etnea to Oer-Erkenschwick | 1,037.29 mi (1,669.35 km) |
