| Argostoli to Oberkirch | 946.64 mi (1,523.46 km) |
| Argostoli to Obernburg am Main | 981.33 mi (1,579.29 km) |
| Argostoli to Obernkirchen | 1,116.93 mi (1,797.53 km) |
| Argostoli to Oberschleissheim | 827.30 mi (1,331.41 km) |
| Argostoli to Oberstdorf | 820.21 mi (1,320.00 km) |
| Argostoli to Obertraubling | 852.92 mi (1,372.64 km) |
| Argostoli to Obertshausen | 1,002.12 mi (1,612.76 km) |
| Argostoli to Oberursel | 1,016.63 mi (1,636.11 km) |
| Argostoli to Ochsenfurt | 945.54 mi (1,521.70 km) |
| Argostoli to Ochsenhausen | 864.49 mi (1,391.26 km) |
| Argostoli to Ochtrup | 1,161.80 mi (1,869.74 km) |
| Argostoli to Odenthal | 1,101.82 mi (1,773.21 km) |
| Argostoli to Oelde | 1,116.43 mi (1,796.73 km) |
| Argostoli to Oelsnitz | 939.29 mi (1,511.64 km) |
| Argostoli to Oer-Erkenschwick | 1,130.01 mi (1,818.57 km) |
