| Castelvetrano to Octeville | 1,092.44 mi (1,758.11 km) |
| Castelvetrano to Oignies | 1,006.48 mi (1,619.78 km) |
| Castelvetrano to Oissel | 993.84 mi (1,599.43 km) |
| Castelvetrano to Olivet | 892.57 mi (1,436.45 km) |
| Castelvetrano to Ollioules | 524.65 mi (844.35 km) |
| Castelvetrano to Olonne-sur-Mer | 962.49 mi (1,548.98 km) |
| Castelvetrano to Oloron-Sainte-Marie | 799.59 mi (1,286.82 km) |
| Castelvetrano to Onet Village | 703.18 mi (1,131.66 km) |
| Castelvetrano to Onnaing | 987.75 mi (1,589.63 km) |
| Castelvetrano to Orange | 609.89 mi (981.52 km) |
| Castelvetrano to Orchies | 1,000.96 mi (1,610.89 km) |
| Castelvetrano to Orleans | 894.30 mi (1,439.23 km) |
| Castelvetrano to Orly | 924.57 mi (1,487.95 km) |
| Castelvetrano to Ormesson-sur-Marne | 922.79 mi (1,485.09 km) |
| Castelvetrano to Orsay | 927.92 mi (1,493.34 km) |
