| Selston to Orbetello | 933.85 mi (1,502.89 km) |
| Selston to Oria | 1,240.40 mi (1,996.23 km) |
| Selston to Oristano | 1,021.86 mi (1,644.53 km) |
| Selston to Orta Nova | 1,132.72 mi (1,822.93 km) |
| Selston to Orte | 966.94 mi (1,556.13 km) |
| Selston to Ortona | 1,035.55 mi (1,666.56 km) |
| Selston to Orvieto | 944.27 mi (1,519.65 km) |
| Selston to Orzinuovi | 731.62 mi (1,177.44 km) |
| Selston to Osimo | 945.67 mi (1,521.90 km) |
| Selston to Ospitaletto | 727.76 mi (1,171.22 km) |
| Selston to Ostuni | 1,226.28 mi (1,973.51 km) |
| Selston to Ottaviano | 1,120.37 mi (1,803.06 km) |
| Selston to Ovada | 735.98 mi (1,184.45 km) |
| Selston to Ozieri | 988.38 mi (1,590.64 km) |
| Selston to Paceco | 1,234.58 mi (1,986.87 km) |
