| Argostoli to Oerlinghausen | 1,110.80 mi (1,787.66 km) |
| Argostoli to Oestrich-Winkel | 1,022.66 mi (1,645.81 km) |
| Argostoli to Offenburg | 948.35 mi (1,526.22 km) |
| Argostoli to Oftersheim | 972.81 mi (1,565.59 km) |
| Argostoli to Ohrdruf | 995.80 mi (1,602.58 km) |
| Argostoli to Ohringen | 936.95 mi (1,507.87 km) |
| Argostoli to Olbernhau | 931.52 mi (1,499.14 km) |
| Argostoli to Olching | 831.36 mi (1,337.95 km) |
| Argostoli to Oldenburg | 1,188.35 mi (1,912.47 km) |
| Argostoli to Oldenburg in Holstein | 1,202.47 mi (1,935.19 km) |
| Argostoli to Olfen | 1,130.37 mi (1,819.16 km) |
| Argostoli to Olpe | 1,080.70 mi (1,739.21 km) |
| Argostoli to Olsberg | 1,081.19 mi (1,740.00 km) |
| Argostoli to Oranienburg | 1,065.62 mi (1,714.94 km) |
| Argostoli to Ortenberg | 1,011.57 mi (1,627.97 km) |
