| Diyadin to Orbetello | 1,694.53 mi (2,727.08 km) |
| Diyadin to Oria | 1,374.65 mi (2,212.29 km) |
| Diyadin to Oristano | 1,852.56 mi (2,981.41 km) |
| Diyadin to Orta Nova | 1,469.52 mi (2,364.96 km) |
| Diyadin to Orte | 1,634.74 mi (2,630.86 km) |
| Diyadin to Ortona | 1,532.55 mi (2,466.41 km) |
| Diyadin to Orvieto | 1,647.71 mi (2,651.73 km) |
| Diyadin to Orzinuovi | 1,752.99 mi (2,821.17 km) |
| Diyadin to Osimo | 1,576.81 mi (2,537.64 km) |
| Diyadin to Ospitaletto | 1,746.49 mi (2,810.71 km) |
| Diyadin to Ostuni | 1,375.73 mi (2,214.03 km) |
| Diyadin to Ottaviano | 1,536.59 mi (2,472.91 km) |
| Diyadin to Ovada | 1,815.81 mi (2,922.27 km) |
| Diyadin to Ozieri | 1,823.09 mi (2,933.98 km) |
| Diyadin to Paceco | 1,672.10 mi (2,690.99 km) |
