| Civita Castellana to Oberkirch | 479.13 mi (771.09 km) |
| Civita Castellana to Obernburg am Main | 544.13 mi (875.70 km) |
| Civita Castellana to Obernkirchen | 705.76 mi (1,135.81 km) |
| Civita Castellana to Oberschleissheim | 413.41 mi (665.31 km) |
| Civita Castellana to Oberstdorf | 368.37 mi (592.83 km) |
| Civita Castellana to Obertraubling | 460.98 mi (741.88 km) |
| Civita Castellana to Obertshausen | 563.33 mi (906.59 km) |
| Civita Castellana to Oberursel | 576.01 mi (927.00 km) |
| Civita Castellana to Ochsenfurt | 520.34 mi (837.41 km) |
| Civita Castellana to Ochsenhausen | 416.65 mi (670.53 km) |
| Civita Castellana to Ochtrup | 726.65 mi (1,169.43 km) |
| Civita Castellana to Odenthal | 653.35 mi (1,051.47 km) |
| Civita Castellana to Oelde | 688.47 mi (1,107.99 km) |
| Civita Castellana to Oelsnitz | 561.20 mi (903.16 km) |
| Civita Castellana to Oer-Erkenschwick | 689.61 mi (1,109.82 km) |
