| Diyadin to Oerlinghausen | 1,869.11 mi (3,008.04 km) |
| Diyadin to Oestrich-Winkel | 1,871.27 mi (3,011.52 km) |
| Diyadin to Offenburg | 1,860.59 mi (2,994.34 km) |
| Diyadin to Oftersheim | 1,838.93 mi (2,959.47 km) |
| Diyadin to Ohrdruf | 1,764.26 mi (2,839.30 km) |
| Diyadin to Ohringen | 1,796.39 mi (2,891.00 km) |
| Diyadin to Olbernhau | 1,651.45 mi (2,657.75 km) |
| Diyadin to Olching | 1,704.11 mi (2,742.51 km) |
| Diyadin to Oldenburg | 1,907.57 mi (3,069.93 km) |
| Diyadin to Oldenburg in Holstein | 1,827.90 mi (2,941.73 km) |
| Diyadin to Olfen | 1,918.87 mi (3,088.13 km) |
| Diyadin to Olpe | 1,890.48 mi (3,042.43 km) |
| Diyadin to Olsberg | 1,867.41 mi (3,005.31 km) |
| Diyadin to Oranienburg | 1,700.19 mi (2,736.19 km) |
| Diyadin to Ortenberg | 1,829.44 mi (2,944.20 km) |
