| Enna to Oberkirch | 819.23 mi (1,318.42 km) |
| Enna to Obernburg am Main | 885.62 mi (1,425.27 km) |
| Enna to Obernkirchen | 1,046.09 mi (1,683.52 km) |
| Enna to Oberschleissheim | 750.87 mi (1,208.41 km) |
| Enna to Oberstdorf | 709.89 mi (1,142.46 km) |
| Enna to Obertraubling | 794.87 mi (1,279.21 km) |
| Enna to Obertshausen | 904.89 mi (1,456.28 km) |
| Enna to Oberursel | 917.61 mi (1,476.75 km) |
| Enna to Ochsenfurt | 860.89 mi (1,385.47 km) |
| Enna to Ochsenhausen | 758.18 mi (1,220.17 km) |
| Enna to Ochtrup | 1,068.24 mi (1,719.17 km) |
| Enna to Odenthal | 994.59 mi (1,600.64 km) |
| Enna to Oelde | 1,029.93 mi (1,657.51 km) |
| Enna to Oelsnitz | 894.15 mi (1,439.00 km) |
| Enna to Oer-Erkenschwick | 1,031.15 mi (1,659.47 km) |
