| Merida to Orbetello | 949.53 mi (1,528.12 km) |
| Merida to Oria | 1,274.92 mi (2,051.79 km) |
| Merida to Oristano | 798.90 mi (1,285.71 km) |
| Merida to Orta Nova | 1,173.62 mi (1,888.76 km) |
| Merida to Orte | 1,008.93 mi (1,623.71 km) |
| Merida to Ortona | 1,110.11 mi (1,786.55 km) |
| Merida to Orvieto | 997.67 mi (1,605.60 km) |
| Merida to Orzinuovi | 944.10 mi (1,519.39 km) |
| Merida to Osimo | 1,074.89 mi (1,729.87 km) |
| Merida to Ospitaletto | 954.52 mi (1,536.15 km) |
| Merida to Ostuni | 1,271.61 mi (2,046.45 km) |
| Merida to Ottaviano | 1,109.04 mi (1,784.82 km) |
| Merida to Ovada | 865.98 mi (1,393.66 km) |
| Merida to Ozieri | 821.99 mi (1,322.87 km) |
| Merida to Paceco | 1,022.04 mi (1,644.81 km) |
