| Castelvetrano to Oerlinghausen | 1,006.97 mi (1,620.56 km) |
| Castelvetrano to Oestrich-Winkel | 883.41 mi (1,421.71 km) |
| Castelvetrano to Offenburg | 783.97 mi (1,261.68 km) |
| Castelvetrano to Oftersheim | 834.23 mi (1,342.57 km) |
| Castelvetrano to Ohrdruf | 913.83 mi (1,470.66 km) |
| Castelvetrano to Ohringen | 812.48 mi (1,307.57 km) |
| Castelvetrano to Olbernhau | 897.46 mi (1,444.32 km) |
| Castelvetrano to Olching | 730.42 mi (1,175.50 km) |
| Castelvetrano to Oldenburg | 1,090.50 mi (1,754.99 km) |
| Castelvetrano to Oldenburg in Holstein | 1,151.65 mi (1,853.40 km) |
| Castelvetrano to Olfen | 1,004.65 mi (1,616.82 km) |
| Castelvetrano to Olpe | 952.72 mi (1,533.26 km) |
| Castelvetrano to Olsberg | 967.42 mi (1,556.91 km) |
| Castelvetrano to Oranienburg | 1,041.53 mi (1,676.18 km) |
| Castelvetrano to Ortenberg | 894.76 mi (1,439.98 km) |
