| Casamassima to Oberkirch | 679.11 mi (1,092.92 km) |
| Casamassima to Obernburg am Main | 719.95 mi (1,158.64 km) |
| Casamassima to Obernkirchen | 863.90 mi (1,390.31 km) |
| Casamassima to Oberschleissheim | 568.58 mi (915.04 km) |
| Casamassima to Oberstdorf | 553.96 mi (891.52 km) |
| Casamassima to Obertraubling | 600.25 mi (966.01 km) |
| Casamassima to Obertshausen | 740.62 mi (1,191.91 km) |
| Casamassima to Oberursel | 754.87 mi (1,214.84 km) |
| Casamassima to Ochsenfurt | 686.46 mi (1,104.75 km) |
| Casamassima to Ochsenhausen | 599.49 mi (964.78 km) |
| Casamassima to Ochtrup | 902.73 mi (1,452.80 km) |
| Casamassima to Odenthal | 839.04 mi (1,350.31 km) |
| Casamassima to Oelde | 858.80 mi (1,382.11 km) |
| Casamassima to Oelsnitz | 692.74 mi (1,114.85 km) |
| Casamassima to Oer-Erkenschwick | 869.35 mi (1,399.09 km) |
