| Nafplio to Oberkirch | 1,057.70 mi (1,702.21 km) |
| Nafplio to Obernburg am Main | 1,084.82 mi (1,745.85 km) |
| Nafplio to Obernkirchen | 1,211.94 mi (1,950.43 km) |
| Nafplio to Oberschleissheim | 929.61 mi (1,496.07 km) |
| Nafplio to Oberstdorf | 930.17 mi (1,496.97 km) |
| Nafplio to Obertraubling | 950.09 mi (1,529.02 km) |
| Nafplio to Obertshausen | 1,105.60 mi (1,779.29 km) |
| Nafplio to Oberursel | 1,120.28 mi (1,802.92 km) |
| Nafplio to Ochsenfurt | 1,047.10 mi (1,685.14 km) |
| Nafplio to Ochsenhausen | 972.64 mi (1,565.31 km) |
| Nafplio to Ochtrup | 1,261.93 mi (2,030.88 km) |
| Nafplio to Odenthal | 1,206.09 mi (1,941.01 km) |
| Nafplio to Oelde | 1,215.46 mi (1,956.09 km) |
| Nafplio to Oelsnitz | 1,030.93 mi (1,659.12 km) |
| Nafplio to Oer-Erkenschwick | 1,231.88 mi (1,982.52 km) |
