| Kos to Oerlinghausen | 1,381.35 mi (2,223.07 km) |
| Kos to Oestrich-Winkel | 1,318.23 mi (2,121.49 km) |
| Kos to Offenburg | 1,260.96 mi (2,029.32 km) |
| Kos to Oftersheim | 1,271.51 mi (2,046.29 km) |
| Kos to Ohrdruf | 1,262.56 mi (2,031.89 km) |
| Kos to Ohringen | 1,231.34 mi (1,981.66 km) |
| Kos to Olbernhau | 1,175.84 mi (1,892.33 km) |
| Kos to Olching | 1,123.54 mi (1,808.16 km) |
| Kos to Oldenburg | 1,450.38 mi (2,334.16 km) |
| Kos to Oldenburg in Holstein | 1,434.13 mi (2,308.01 km) |
| Kos to Olfen | 1,411.92 mi (2,272.26 km) |
| Kos to Olpe | 1,366.59 mi (2,199.31 km) |
| Kos to Olsberg | 1,359.33 mi (2,187.63 km) |
| Kos to Oranienburg | 1,290.42 mi (2,076.74 km) |
| Kos to Ortenberg | 1,296.29 mi (2,086.18 km) |
