| Koyulhisar to Octeville | 2,007.75 mi (3,231.16 km) |
| Koyulhisar to Oignies | 1,809.74 mi (2,912.49 km) |
| Koyulhisar to Oissel | 1,883.87 mi (3,031.79 km) |
| Koyulhisar to Olivet | 1,839.55 mi (2,960.47 km) |
| Koyulhisar to Ollioules | 1,650.84 mi (2,656.77 km) |
| Koyulhisar to Olonne-sur-Mer | 2,011.33 mi (3,236.91 km) |
| Koyulhisar to Oloron-Sainte-Marie | 1,973.91 mi (3,176.70 km) |
| Koyulhisar to Onet Village | 1,807.20 mi (2,908.41 km) |
| Koyulhisar to Onnaing | 1,782.57 mi (2,868.77 km) |
| Koyulhisar to Orange | 1,698.52 mi (2,733.50 km) |
| Koyulhisar to Orchies | 1,798.93 mi (2,895.10 km) |
| Koyulhisar to Orleans | 1,839.31 mi (2,960.08 km) |
| Koyulhisar to Orly | 1,821.39 mi (2,931.24 km) |
| Koyulhisar to Ormesson-sur-Marne | 1,815.06 mi (2,921.05 km) |
| Koyulhisar to Orsay | 1,830.43 mi (2,945.79 km) |
