| Koyulhisar to Oberkirch | 1,562.02 mi (2,513.83 km) |
| Koyulhisar to Obernburg am Main | 1,534.53 mi (2,469.59 km) |
| Koyulhisar to Obernkirchen | 1,585.12 mi (2,551.01 km) |
| Koyulhisar to Oberschleissheim | 1,401.57 mi (2,255.61 km) |
| Koyulhisar to Oberstdorf | 1,448.59 mi (2,331.27 km) |
| Koyulhisar to Obertraubling | 1,387.46 mi (2,232.90 km) |
| Koyulhisar to Obertshausen | 1,551.72 mi (2,497.25 km) |
| Koyulhisar to Oberursel | 1,565.08 mi (2,518.76 km) |
| Koyulhisar to Ochsenfurt | 1,491.24 mi (2,399.92 km) |
| Koyulhisar to Ochsenhausen | 1,471.93 mi (2,368.84 km) |
| Koyulhisar to Ochtrup | 1,661.03 mi (2,673.17 km) |
| Koyulhisar to Odenthal | 1,641.57 mi (2,641.85 km) |
| Koyulhisar to Oelde | 1,614.35 mi (2,598.05 km) |
| Koyulhisar to Oelsnitz | 1,418.01 mi (2,282.06 km) |
| Koyulhisar to Oer-Erkenschwick | 1,647.27 mi (2,651.02 km) |
