| Melres to Orbetello | 1,013.09 mi (1,630.42 km) |
| Melres to Oria | 1,357.46 mi (2,184.63 km) |
| Melres to Oristano | 895.07 mi (1,440.48 km) |
| Melres to Orta Nova | 1,249.58 mi (2,011.00 km) |
| Melres to Orte | 1,072.86 mi (1,726.61 km) |
| Melres to Ortona | 1,175.85 mi (1,892.35 km) |
| Melres to Orvieto | 1,058.42 mi (1,703.37 km) |
| Melres to Orzinuovi | 967.71 mi (1,557.37 km) |
| Melres to Osimo | 1,127.80 mi (1,815.02 km) |
| Melres to Ospitaletto | 976.53 mi (1,571.57 km) |
| Melres to Ostuni | 1,352.11 mi (2,176.02 km) |
| Melres to Ottaviano | 1,190.37 mi (1,915.71 km) |
| Melres to Ovada | 896.13 mi (1,442.18 km) |
| Melres to Ozieri | 908.99 mi (1,462.89 km) |
| Melres to Paceco | 1,133.78 mi (1,824.64 km) |
