| Ortakoy to Orbetello | 1,220.73 mi (1,964.58 km) |
| Ortakoy to Oria | 880.28 mi (1,416.68 km) |
| Ortakoy to Oristano | 1,357.95 mi (2,185.42 km) |
| Ortakoy to Orta Nova | 984.03 mi (1,583.64 km) |
| Ortakoy to Orte | 1,161.25 mi (1,868.85 km) |
| Ortakoy to Ortona | 1,058.29 mi (1,703.15 km) |
| Ortakoy to Orvieto | 1,177.01 mi (1,894.21 km) |
| Ortakoy to Orzinuovi | 1,313.18 mi (2,113.36 km) |
| Ortakoy to Osimo | 1,115.84 mi (1,795.77 km) |
| Ortakoy to Ospitaletto | 1,308.83 mi (2,106.37 km) |
| Ortakoy to Ostuni | 883.78 mi (1,422.31 km) |
| Ortakoy to Ottaviano | 1,046.43 mi (1,684.07 km) |
| Ortakoy to Ovada | 1,365.71 mi (2,197.90 km) |
| Ortakoy to Ozieri | 1,333.23 mi (2,145.62 km) |
| Ortakoy to Paceco | 1,162.70 mi (1,871.18 km) |
