| Civita Castellana to Oerlinghausen | 690.71 mi (1,111.59 km) |
| Civita Castellana to Oestrich-Winkel | 572.36 mi (921.12 km) |
| Civita Castellana to Offenburg | 478.30 mi (769.75 km) |
| Civita Castellana to Oftersheim | 522.16 mi (840.34 km) |
| Civita Castellana to Ohrdruf | 594.82 mi (957.27 km) |
| Civita Castellana to Ohringen | 497.12 mi (800.03 km) |
| Civita Castellana to Olbernhau | 580.01 mi (933.43 km) |
| Civita Castellana to Olching | 411.36 mi (662.02 km) |
| Civita Castellana to Oldenburg | 774.13 mi (1,245.84 km) |
| Civita Castellana to Oldenburg in Holstein | 832.30 mi (1,339.46 km) |
| Civita Castellana to Olfen | 692.23 mi (1,114.03 km) |
| Civita Castellana to Olpe | 640.11 mi (1,030.16 km) |
| Civita Castellana to Olsberg | 652.28 mi (1,049.74 km) |
| Civita Castellana to Oranienburg | 723.61 mi (1,164.55 km) |
| Civita Castellana to Ortenberg | 579.26 mi (932.23 km) |
