| Nafplio to Opwijk | 1,298.87 mi (2,090.33 km) |
| Nafplio to Ostend | 1,353.32 mi (2,177.96 km) |
| Nafplio to Oud-Heverlee | 1,276.65 mi (2,054.57 km) |
| Nafplio to Oud-Turnhout | 1,287.45 mi (2,071.94 km) |
| Nafplio to Oudenaarde | 1,314.10 mi (2,114.83 km) |
| Nafplio to Oudenburg | 1,348.77 mi (2,170.63 km) |
| Nafplio to Oupeye | 1,238.32 mi (1,992.88 km) |
| Nafplio to Overijse | 1,279.04 mi (2,058.41 km) |
| Nafplio to Overpelt | 1,268.76 mi (2,041.88 km) |
| Nafplio to Paal | 1,268.75 mi (2,041.86 km) |
| Nafplio to Peer | 1,263.74 mi (2,033.80 km) |
| Nafplio to Pepinster | 1,226.17 mi (1,973.34 km) |
| Nafplio to Peruwelz | 1,300.99 mi (2,093.75 km) |
| Nafplio to Perwez | 1,262.54 mi (2,031.87 km) |
| Nafplio to Philippeville | 1,253.74 mi (2,017.70 km) |
