| Melfi to Octeville | 1,026.23 mi (1,651.56 km) |
| Melfi to Oignies | 892.35 mi (1,436.10 km) |
| Melfi to Oissel | 911.13 mi (1,466.31 km) |
| Melfi to Olivet | 825.76 mi (1,328.93 km) |
| Melfi to Ollioules | 523.72 mi (842.84 km) |
| Melfi to Olonne-sur-Mer | 947.11 mi (1,524.23 km) |
| Melfi to Oloron-Sainte-Marie | 845.71 mi (1,361.04 km) |
| Melfi to Onet Village | 701.80 mi (1,129.44 km) |
| Melfi to Onnaing | 869.05 mi (1,398.60 km) |
| Melfi to Orange | 592.11 mi (952.92 km) |
| Melfi to Orchies | 884.50 mi (1,423.47 km) |
| Melfi to Orleans | 826.76 mi (1,330.54 km) |
| Melfi to Orly | 839.15 mi (1,350.49 km) |
| Melfi to Ormesson-sur-Marne | 835.38 mi (1,344.41 km) |
| Melfi to Orsay | 845.10 mi (1,360.06 km) |
