| Koyulhisar to Orbetello | 1,382.28 mi (2,224.56 km) |
| Koyulhisar to Oria | 1,060.44 mi (1,706.61 km) |
| Koyulhisar to Oristano | 1,538.37 mi (2,475.76 km) |
| Koyulhisar to Orta Nova | 1,155.62 mi (1,859.80 km) |
| Koyulhisar to Orte | 1,322.44 mi (2,128.26 km) |
| Koyulhisar to Ortona | 1,219.97 mi (1,963.35 km) |
| Koyulhisar to Orvieto | 1,335.88 mi (2,149.90 km) |
| Koyulhisar to Orzinuovi | 1,448.30 mi (2,330.81 km) |
| Koyulhisar to Osimo | 1,266.61 mi (2,038.41 km) |
| Koyulhisar to Ospitaletto | 1,442.35 mi (2,321.24 km) |
| Koyulhisar to Ostuni | 1,061.52 mi (1,708.35 km) |
| Koyulhisar to Ottaviano | 1,222.47 mi (1,967.38 km) |
| Koyulhisar to Ovada | 1,508.67 mi (2,427.97 km) |
| Koyulhisar to Ozieri | 1,509.10 mi (2,428.65 km) |
| Koyulhisar to Paceco | 1,359.48 mi (2,187.87 km) |
