| Torre del Mar to Orbetello | 903.27 mi (1,453.67 km) |
| Torre del Mar to Oria | 1,198.12 mi (1,928.19 km) |
| Torre del Mar to Oristano | 720.88 mi (1,160.15 km) |
| Torre del Mar to Orta Nova | 1,106.45 mi (1,780.66 km) |
| Torre del Mar to Orte | 960.08 mi (1,545.09 km) |
| Torre del Mar to Ortona | 1,056.09 mi (1,699.61 km) |
| Torre del Mar to Orvieto | 952.80 mi (1,533.38 km) |
| Torre del Mar to Orzinuovi | 941.79 mi (1,515.67 km) |
| Torre del Mar to Osimo | 1,036.18 mi (1,667.57 km) |
| Torre del Mar to Ospitaletto | 953.47 mi (1,534.46 km) |
| Torre del Mar to Ostuni | 1,197.16 mi (1,926.64 km) |
| Torre del Mar to Ottaviano | 1,037.41 mi (1,669.55 km) |
| Torre del Mar to Ovada | 860.20 mi (1,384.36 km) |
| Torre del Mar to Ozieri | 753.99 mi (1,213.42 km) |
| Torre del Mar to Paceco | 917.03 mi (1,475.82 km) |
